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better prouct

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This commit is contained in:
Polen 2026-04-02 14:11:59 -04:00
parent 60aa3ad422
commit ecab4d550c
6 changed files with 969 additions and 229 deletions
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1
.gitignore vendored
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@ -1,2 +1,3 @@
/essence /essence
/result /result
*.db

16
go.mod
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@ -1,3 +1,17 @@
module github.com/polen/essence module github.com/polen/essence
go 1.26.1 go 1.25.0
require modernc.org/sqlite v1.48.0
require (
github.com/dustin/go-humanize v1.0.1 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/ncruces/go-strftime v1.0.0 // indirect
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
golang.org/x/sys v0.42.0 // indirect
modernc.org/libc v1.70.0 // indirect
modernc.org/mathutil v1.7.1 // indirect
modernc.org/memory v1.11.0 // indirect
)

51
go.sum Normal file
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@ -0,0 +1,51 @@
github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
golang.org/x/mod v0.33.0 h1:tHFzIWbBifEmbwtGz65eaWyGiGZatSrT9prnU8DbVL8=
golang.org/x/mod v0.33.0/go.mod h1:swjeQEj+6r7fODbD2cqrnje9PnziFuw4bmLbBZFrQ5w=
golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/tools v0.42.0 h1:uNgphsn75Tdz5Ji2q36v/nsFSfR/9BRFvqhGBaJGd5k=
golang.org/x/tools v0.42.0/go.mod h1:Ma6lCIwGZvHK6XtgbswSoWroEkhugApmsXyrUmBhfr0=
modernc.org/cc/v4 v4.27.1 h1:9W30zRlYrefrDV2JE2O8VDtJ1yPGownxciz5rrbQZis=
modernc.org/cc/v4 v4.27.1/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
modernc.org/ccgo/v4 v4.32.0 h1:hjG66bI/kqIPX1b2yT6fr/jt+QedtP2fqojG2VrFuVw=
modernc.org/ccgo/v4 v4.32.0/go.mod h1:6F08EBCx5uQc38kMGl+0Nm0oWczoo1c7cgpzEry7Uc0=
modernc.org/fileutil v1.4.0 h1:j6ZzNTftVS054gi281TyLjHPp6CPHr2KCxEXjEbD6SM=
modernc.org/fileutil v1.4.0/go.mod h1:EqdKFDxiByqxLk8ozOxObDSfcVOv/54xDs/DUHdvCUU=
modernc.org/gc/v2 v2.6.5 h1:nyqdV8q46KvTpZlsw66kWqwXRHdjIlJOhG6kxiV/9xI=
modernc.org/gc/v2 v2.6.5/go.mod h1:YgIahr1ypgfe7chRuJi2gD7DBQiKSLMPgBQe9oIiito=
modernc.org/gc/v3 v3.1.2 h1:ZtDCnhonXSZexk/AYsegNRV1lJGgaNZJuKjJSWKyEqo=
modernc.org/gc/v3 v3.1.2/go.mod h1:HFK/6AGESC7Ex+EZJhJ2Gni6cTaYpSMmU/cT9RmlfYY=
modernc.org/goabi0 v0.2.0 h1:HvEowk7LxcPd0eq6mVOAEMai46V+i7Jrj13t4AzuNks=
modernc.org/goabi0 v0.2.0/go.mod h1:CEFRnnJhKvWT1c1JTI3Avm+tgOWbkOu5oPA8eH8LnMI=
modernc.org/libc v1.70.0 h1:U58NawXqXbgpZ/dcdS9kMshu08aiA6b7gusEusqzNkw=
modernc.org/libc v1.70.0/go.mod h1:OVmxFGP1CI/Z4L3E0Q3Mf1PDE0BucwMkcXjjLntvHJo=
modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
modernc.org/opt v0.1.4 h1:2kNGMRiUjrp4LcaPuLY2PzUfqM/w9N23quVwhKt5Qm8=
modernc.org/opt v0.1.4/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
modernc.org/sortutil v1.2.1 h1:+xyoGf15mM3NMlPDnFqrteY07klSFxLElE2PVuWIJ7w=
modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
modernc.org/sqlite v1.48.0 h1:ElZyLop3Q2mHYk5IFPPXADejZrlHu7APbpB0sF78bq4=
modernc.org/sqlite v1.48.0/go.mod h1:hWjRO6Tj/5Ik8ieqxQybiEOUXy0NJFNp2tpvVpKlvig=
modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=

239
main.go
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@ -2,6 +2,7 @@ package main
import ( import (
"compress/gzip" "compress/gzip"
"database/sql"
"embed" "embed"
"encoding/json" "encoding/json"
"fmt" "fmt"
@ -10,18 +11,21 @@ import (
"log" "log"
"net/http" "net/http"
"os" "os"
"strconv"
"strings" "strings"
"sync" "sync"
"time" "time"
_ "modernc.org/sqlite"
) )
//go:embed static/* //go:embed static/*
var staticFiles embed.FS var staticFiles embed.FS
const ( const (
geojsonURL = "https://regieessencequebec.ca/stations.geojson.gz" geojsonURL = "https://regieessencequebec.ca/stations.geojson.gz"
defaultPort = "8080" defaultPort = "8080"
cacheTTL = 5 * time.Minute pollInterval = 5 * time.Minute
) )
// GeoJSON structures matching the upstream format. // GeoJSON structures matching the upstream format.
@ -57,35 +61,195 @@ type StationsResponse struct {
Stations []Station `json:"stations"` Stations []Station `json:"stations"`
} }
// Snapshot holds the aggregated statistics for one fetch.
type Snapshot struct {
GeneratedAt string `json:"generatedAt"`
FetchedAt string `json:"fetchedAt"`
RegularAvg float64 `json:"regularAvg"`
RegularMin float64 `json:"regularMin"`
RegularMax float64 `json:"regularMax"`
SuperAvg float64 `json:"superAvg"`
DieselAvg float64 `json:"dieselAvg"`
StationCount int `json:"stationCount"`
}
type StatsResponse struct {
Snapshots []Snapshot `json:"snapshots"`
}
// In-memory cache // In-memory cache
var ( var (
cacheMu sync.RWMutex cacheMu sync.RWMutex
cachedResp *StationsResponse cachedResp *StationsResponse
cacheExpiry time.Time
) )
var db *sql.DB
func main() { func main() {
port := os.Getenv("PORT") port := os.Getenv("PORT")
if port == "" { if port == "" {
port = defaultPort port = defaultPort
} }
dbPath := os.Getenv("ESSENCE_DB")
if dbPath == "" {
dbPath = "./essence.db"
}
var err error
db, err = initDB(dbPath)
if err != nil {
log.Fatalf("db init: %v", err)
}
defer db.Close()
// Initial fetch, then background poll every 5 minutes.
go poller()
staticSub, err := fs.Sub(staticFiles, "static") staticSub, err := fs.Sub(staticFiles, "static")
if err != nil { if err != nil {
log.Fatalf("static files: %v", err) log.Fatalf("static files: %v", err)
} }
http.HandleFunc("/api/stations", handleStations) http.HandleFunc("/api/stations", handleStations)
http.HandleFunc("/api/stats", handleStats)
http.Handle("/", http.FileServer(http.FS(staticSub))) http.Handle("/", http.FileServer(http.FS(staticSub)))
log.Printf("Listening on http://localhost:%s", port) log.Printf("Listening on http://localhost:%s", port)
log.Fatal(http.ListenAndServe(":"+port, nil)) log.Fatal(http.ListenAndServe(":"+port, nil))
} }
func handleStations(w http.ResponseWriter, r *http.Request) { // initDB opens (or creates) the SQLite database and ensures the schema exists.
resp, err := getStations() func initDB(path string) (*sql.DB, error) {
d, err := sql.Open("sqlite", path)
if err != nil { if err != nil {
http.Error(w, fmt.Sprintf("error: %v", err), http.StatusInternalServerError) return nil, err
}
_, err = d.Exec(`
CREATE TABLE IF NOT EXISTS snapshots (
generated_at TEXT PRIMARY KEY,
fetched_at TEXT NOT NULL,
regular_avg REAL,
regular_min REAL,
regular_max REAL,
super_avg REAL,
diesel_avg REAL,
station_count INTEGER
)
`)
if err != nil {
return nil, fmt.Errorf("create table: %w", err)
}
return d, nil
}
// poller fetches immediately then every pollInterval.
func poller() {
fetchAndStore()
ticker := time.NewTicker(pollInterval)
defer ticker.Stop()
for range ticker.C {
fetchAndStore()
}
}
// fetchAndStore fetches upstream data, updates the in-memory cache, and
// persists a snapshot to SQLite if the data has a new generated_at value.
func fetchAndStore() {
resp, err := fetchAndParse()
if err != nil {
log.Printf("fetch error: %v", err)
return
}
cacheMu.Lock()
cachedResp = resp
cacheMu.Unlock()
if resp.LastUpdated == "" {
return
}
// Compute aggregates.
snap := computeSnapshot(resp)
// Only insert if this generated_at is new.
_, err = db.Exec(`
INSERT OR IGNORE INTO snapshots
(generated_at, fetched_at, regular_avg, regular_min, regular_max, super_avg, diesel_avg, station_count)
VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
snap.GeneratedAt,
snap.FetchedAt,
snap.RegularAvg,
snap.RegularMin,
snap.RegularMax,
snap.SuperAvg,
snap.DieselAvg,
snap.StationCount,
)
if err != nil {
log.Printf("db insert error: %v", err)
}
}
// computeSnapshot derives aggregate statistics from a StationsResponse.
func computeSnapshot(resp *StationsResponse) Snapshot {
now := time.Now().UTC().Format(time.RFC3339)
snap := Snapshot{
GeneratedAt: resp.LastUpdated,
FetchedAt: now,
}
var regularSum, superSum, dieselSum float64
var regularCount, superCount, dieselCount int
snap.RegularMin = 1<<53 - 1
snap.RegularMax = 0
for _, s := range resp.Stations {
if s.Regular > 0 {
regularSum += s.Regular
regularCount++
if s.Regular < snap.RegularMin {
snap.RegularMin = s.Regular
}
if s.Regular > snap.RegularMax {
snap.RegularMax = s.Regular
}
}
if s.Super > 0 {
superSum += s.Super
superCount++
}
if s.Diesel > 0 {
dieselSum += s.Diesel
dieselCount++
}
}
snap.StationCount = len(resp.Stations)
if regularCount > 0 {
snap.RegularAvg = regularSum / float64(regularCount)
} else {
snap.RegularMin = 0
}
if superCount > 0 {
snap.SuperAvg = superSum / float64(superCount)
}
if dieselCount > 0 {
snap.DieselAvg = dieselSum / float64(dieselCount)
}
return snap
}
func handleStations(w http.ResponseWriter, r *http.Request) {
cacheMu.RLock()
resp := cachedResp
cacheMu.RUnlock()
if resp == nil {
http.Error(w, "data not yet available, please retry shortly", http.StatusServiceUnavailable)
return return
} }
@ -94,25 +258,54 @@ func handleStations(w http.ResponseWriter, r *http.Request) {
json.NewEncoder(w).Encode(resp) json.NewEncoder(w).Encode(resp)
} }
func getStations() (*StationsResponse, error) { func handleStats(w http.ResponseWriter, r *http.Request) {
cacheMu.RLock() daysStr := r.URL.Query().Get("days")
if cachedResp != nil && time.Now().Before(cacheExpiry) { days := 7
defer cacheMu.RUnlock() if daysStr != "" {
return cachedResp, nil if d, err := strconv.Atoi(daysStr); err == nil && d > 0 {
days = d
}
} }
cacheMu.RUnlock()
resp, err := fetchAndParse() // days=0 means all data
var rows *sql.Rows
var err error
if daysStr == "0" {
rows, err = db.Query(`
SELECT generated_at, fetched_at, regular_avg, regular_min, regular_max,
super_avg, diesel_avg, station_count
FROM snapshots
ORDER BY generated_at ASC
`)
} else {
since := time.Now().UTC().Add(-time.Duration(days) * 24 * time.Hour).Format(time.RFC3339)
rows, err = db.Query(`
SELECT generated_at, fetched_at, regular_avg, regular_min, regular_max,
super_avg, diesel_avg, station_count
FROM snapshots
WHERE generated_at >= ?
ORDER BY generated_at ASC
`, since)
}
if err != nil { if err != nil {
return nil, err http.Error(w, fmt.Sprintf("db query: %v", err), http.StatusInternalServerError)
return
}
defer rows.Close()
snapshots := []Snapshot{}
for rows.Next() {
var s Snapshot
if err := rows.Scan(&s.GeneratedAt, &s.FetchedAt, &s.RegularAvg, &s.RegularMin, &s.RegularMax,
&s.SuperAvg, &s.DieselAvg, &s.StationCount); err != nil {
http.Error(w, fmt.Sprintf("db scan: %v", err), http.StatusInternalServerError)
return
}
snapshots = append(snapshots, s)
} }
cacheMu.Lock() w.Header().Set("Content-Type", "application/json")
cachedResp = resp json.NewEncoder(w).Encode(StatsResponse{Snapshots: snapshots})
cacheExpiry = time.Now().Add(cacheTTL)
cacheMu.Unlock()
return resp, nil
} }
func fetchAndParse() (*StationsResponse, error) { func fetchAndParse() (*StationsResponse, error) {

11
nixos-module.nix
View file

@ -14,6 +14,12 @@ in
description = "Port the Essence web server listens on."; description = "Port the Essence web server listens on.";
}; };
dataDir = lib.mkOption {
type = lib.types.str;
default = "/var/lib/essence";
description = "Directory where the SQLite database is stored.";
};
openFirewall = lib.mkOption { openFirewall = lib.mkOption {
type = lib.types.bool; type = lib.types.bool;
default = false; default = false;
@ -36,7 +42,8 @@ in
wants = [ "network-online.target" ]; wants = [ "network-online.target" ];
environment = { environment = {
PORT = toString cfg.port; PORT = toString cfg.port;
ESSENCE_DB = "${cfg.dataDir}/essence.db";
}; };
serviceConfig = { serviceConfig = {
@ -45,6 +52,8 @@ in
RestartSec = 5; RestartSec = 5;
DynamicUser = true; DynamicUser = true;
StateDirectory = "essence";
StateDirectoryMode = "0750";
# Hardening # Hardening
NoNewPrivileges = true; NoNewPrivileges = true;

880
static/index.html
View file

@ -3,144 +3,455 @@
<head> <head>
<meta charset="UTF-8"> <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Essence Québec - Carte des prix</title> <title>Essence Québec</title>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" /> <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
<link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster@1.5.3/dist/MarkerCluster.css" /> <link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster@1.5.3/dist/MarkerCluster.css" />
<link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster@1.5.3/dist/MarkerCluster.Default.css" /> <link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster@1.5.3/dist/MarkerCluster.Default.css" />
<link rel="stylesheet" href="https://unpkg.com/@knadh/oat/oat.min.css">
<style> <style>
* { margin: 0; padding: 0; box-sizing: border-box; } /* ── Theme: Gouvernement du Québec blue ─────────────── */
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; } :root {
#map { width: 100vw; height: 100vh; } --primary: rgb(9 87 151); /* #095797 */
--primary-foreground: rgb(255 255 255);
#loading { --ring: rgb(9 87 151);
position: fixed; top: 0; left: 0; right: 0; bottom: 0; }
background: rgba(255, 255, 255, 0.9); /* Dark mode: slightly lighter so it stays accessible on dark backgrounds */
display: flex; align-items: center; justify-content: center; @media (prefers-color-scheme: dark) {
z-index: 10000; font-size: 1.2em; color: #333; :root {
--primary: rgb(41 121 193);
--primary-foreground: rgb(255 255 255);
--ring: rgb(41 121 193);
}
} }
/* Controls panel (top-left) */ /* ── Layout ─────────────────────────────────────────── */
#controls { html, body { height: 100%; margin: 0; padding: 0; }
position: fixed; top: 12px; left: 56px;
background: white; padding: 10px 14px;
border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.2);
z-index: 2000; font-size: 13px;
display: flex; align-items: center; gap: 8px;
}
.mode-btn {
padding: 5px 12px; border: 1px solid #ccc; border-radius: 4px;
background: #f5f5f5; cursor: pointer; font-size: 13px;
transition: all 0.15s;
}
.mode-btn:hover { background: #e8e8e8; }
.mode-btn.active { background: #095797; color: white; border-color: #095797; }
/* Slider panel (top-left, below controls, stations mode only) */ /* ── Top nav ─────────────────────────────────────────── */
#topnav {
display: flex; align-items: center; gap: 0;
height: 44px; padding: 0 16px;
background: var(--card);
border-bottom: 1px solid var(--border);
flex-shrink: 0;
z-index: 2000;
}
#topnav .brand {
font-weight: 700; font-size: 15px; letter-spacing: -0.2px;
margin-right: 24px; color: var(--foreground);
text-decoration: none;
}
#topnav nav { display: flex; gap: 2px; }
#topnav nav a {
display: flex; align-items: center; gap: 6px;
padding: 5px 12px; border-radius: 6px;
text-decoration: none; color: var(--muted-foreground);
font-size: 13px; font-weight: 500;
transition: background 0.12s, color 0.12s;
}
#topnav nav a:hover {
background: var(--muted);
color: var(--foreground);
}
#topnav nav a[aria-current="page"] {
background: var(--primary);
color: var(--primary-foreground);
}
#topnav nav a svg { flex-shrink: 0; }
/* ── App shell ───────────────────────────────────────── */
#app {
display: flex; flex-direction: column;
height: 100%;
}
#content {
flex: 1; min-height: 0;
display: flex; flex-direction: column;
}
/* ── Map page ────────────────────────────────────────── */
#page-map { display: flex; flex-direction: column; flex: 1; position: relative; }
#map { flex: 1; min-height: 0; }
/* Slider + fuel panel */
#slider-panel { #slider-panel {
position: fixed; top: 70px; left: 56px; position: absolute; top: 12px; left: 12px;
background: white; padding: 10px 14px; padding: 10px 14px;
border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.2); z-index: 1000; font-size: 13px; min-width: 280px;
z-index: 2000; font-size: 13px; min-width: 260px; }
display: none; #slider-panel .fuel-btns { display: flex; gap: 6px; margin-bottom: 10px; }
#region-select {
width: 100%; margin-bottom: 10px;
padding: 5px 8px; font-size: 12px;
border: 1px solid var(--border); border-radius: 4px;
background: var(--secondary); color: var(--secondary-foreground);
cursor: pointer;
} }
#slider-panel label { display: block; margin-bottom: 6px; font-weight: 600; } #slider-panel label { display: block; margin-bottom: 6px; font-weight: 600; }
#price-slider { width: 100%; cursor: pointer; } #price-slider { width: 100%; cursor: pointer; }
#slider-value { display: flex; justify-content: space-between; margin-top: 4px; font-size: 11px; color: #666; } #slider-value {
#visible-count { margin-top: 6px; font-size: 11px; color: #888; } display: flex; justify-content: space-between;
margin-top: 4px; font-size: 11px;
color: var(--muted-foreground);
}
#visible-count { margin-top: 6px; font-size: 11px; color: var(--muted-foreground); }
/* Legend (bottom-right, heatmap mode only) */ /* Map overlay panels — sit above the Leaflet tiles */
.map-panel {
background: var(--card);
color: var(--card-foreground);
border: 1px solid var(--border);
border-radius: 8px;
box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
/* Legend */
#legend { #legend {
position: fixed; bottom: 20px; right: 20px; position: absolute; bottom: 20px; right: 20px;
background: white; padding: 12px 16px; padding: 12px 16px;
border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.2); z-index: 1000; font-size: 13px; min-width: 180px;
z-index: 2000; font-size: 13px; min-width: 180px;
} }
#legend h3 { margin-bottom: 8px; font-size: 14px; } #legend h3 { margin-bottom: 8px; font-size: 14px; }
.legend-gradient { .legend-gradient {
height: 16px; border-radius: 4px; height: 16px; border-radius: 4px;
background: linear-gradient(to right, #313695, #4575b4, #74add1, #abd9e9, #fee090, #fdae61, #f46d43, #d73027, #a50026); background: linear-gradient(to right, #16a34a, #65a30d, #ca8a04, #ea580c, #dc2626);
margin-bottom: 4px; margin-bottom: 4px;
} }
.legend-labels { display: flex; justify-content: space-between; font-size: 11px; color: #666; } .legend-labels {
#stats { margin-top: 8px; font-size: 11px; color: #888; } display: flex; justify-content: space-between;
font-size: 11px; color: var(--muted-foreground);
}
#map-stats { margin-top: 8px; font-size: 11px; color: var(--muted-foreground); }
#last-updated { #last-updated {
position: fixed; bottom: 8px; left: 56px; position: absolute; bottom: 8px; left: 12px;
background: white; padding: 5px 10px; padding: 5px 10px;
border-radius: 6px; box-shadow: 0 1px 4px rgba(0,0,0,0.15); z-index: 1000; font-size: 11px;
z-index: 2000; font-size: 11px; color: #666; color: var(--muted-foreground);
} }
/* Colored pin markers */ .pin-icon { filter: drop-shadow(0 1px 3px rgba(0,0,0,0.35)); }
.pin-icon {
filter: drop-shadow(0 1px 3px rgba(0,0,0,0.35)); .fuel-btn {
padding: 4px 12px;
border: 1px solid var(--border);
border-radius: 4px;
background: var(--secondary);
color: var(--secondary-foreground);
cursor: pointer; font-size: 12px;
transition: all 0.15s;
} }
.fuel-btn:hover { background: var(--muted); }
.fuel-btn.active {
background: var(--primary);
color: var(--primary-foreground);
border-color: var(--primary);
}
/* ── Loading overlay ─────────────────────────────────── */
#loading {
position: fixed; inset: 0;
background: var(--background);
opacity: 0.92;
display: flex; align-items: center; justify-content: center;
z-index: 10000; font-size: 1.1em;
color: var(--foreground);
gap: 12px;
}
/* ── Stats page ──────────────────────────────────────── */
#page-stats { display: none; padding: 24px; overflow-y: auto; flex: 1; flex-direction: column; }
#page-stats h2 { margin-bottom: 20px; }
.stat-cards {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
gap: 16px;
margin-bottom: 28px;
}
.stat-cards .card { margin: 0; }
.stat-cards .card header { padding-bottom: 4px; }
.stat-cards .card header p { font-size: 12px; color: var(--muted-foreground); margin: 0; }
.stat-value { font-size: 28px; font-weight: 700; margin: 4px 0 0; }
.stat-sub { font-size: 12px; color: var(--muted-foreground); margin-top: 2px; }
.chart-wrap {
background: var(--card);
color: var(--card-foreground);
border: 1px solid var(--border);
border-radius: 8px;
padding: 20px;
margin-bottom: 28px;
}
.chart-wrap h3 { margin-bottom: 4px; }
.chart-wrap .chart-subtitle {
font-size: 12px; color: var(--muted-foreground); margin-bottom: 16px;
}
.range-btns { display: flex; gap: 6px; margin-bottom: 16px; }
.range-btn {
padding: 4px 12px;
border: 1px solid var(--border);
border-radius: 4px;
background: var(--secondary);
color: var(--secondary-foreground);
cursor: pointer; font-size: 12px;
}
.range-btn:hover { background: var(--muted); }
.range-btn.active {
background: var(--primary);
color: var(--primary-foreground);
border-color: var(--primary);
}
#stats-chart-canvas { width: 100% !important; max-height: 320px; }
.no-data { color: var(--muted-foreground); font-size: 14px; padding: 24px 0; text-align: center; }
.table-wrap { overflow-x: auto; }
</style> </style>
</head> </head>
<body> <body>
<div id="loading">Chargement des données...</div>
<div id="map"></div>
<div id="controls"> <!-- Loading overlay -->
<button class="mode-btn active" data-mode="stations">Stations</button> <div id="loading">
<button class="mode-btn" data-mode="heatmap">Heatmap</button> <div aria-busy="true"></div>
<span>Chargement des données...</span>
</div> </div>
<div id="slider-panel"> <div id="app">
<label for="price-slider">Prix max: <span id="slider-label">-</span></label>
<input type="range" id="price-slider" min="0" max="300" step="0.5" value="300">
<div id="slider-value">
<span id="slider-min">-</span>
<span id="slider-max">-</span>
</div>
<div id="visible-count"></div>
</div>
<div id="last-updated"></div> <!-- ── Top nav ── -->
<header id="topnav">
<span class="brand">Essence QC</span>
<nav>
<a href="#" id="nav-map" aria-current="page" onclick="showPage('map');return false;">
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<polygon points="3 6 9 3 15 6 21 3 21 18 15 21 9 18 3 21"/>
<line x1="9" y1="3" x2="9" y2="18"/><line x1="15" y1="6" x2="15" y2="21"/>
</svg>
Carte
</a>
<a href="#" id="nav-stats" onclick="showPage('stats');return false;">
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<line x1="18" y1="20" x2="18" y2="10"/>
<line x1="12" y1="20" x2="12" y2="4"/>
<line x1="6" y1="20" x2="6" y2="14"/>
</svg>
Statistiques
</a>
</nav>
</header>
<div id="legend"> <!-- ── Content area ── -->
<h3>Prix régulier (¢/L)</h3> <div id="content">
<div class="legend-gradient"></div>
<div class="legend-labels"> <!-- ── MAP PAGE ── -->
<span id="min-price">-</span> <div id="page-map">
<span id="max-price">-</span> <div id="map"></div>
</div>
<div id="stats"></div> <div id="slider-panel" class="map-panel">
</div> <div class="fuel-btns">
<button class="fuel-btn active" data-fuel="regular">Régulier</button>
<button class="fuel-btn" data-fuel="super">Super</button>
<button class="fuel-btn" data-fuel="diesel">Diesel</button>
</div>
<select id="region-select">
<option value="">Toutes les régions</option>
</select>
<label for="price-slider">Prix max: <span id="slider-label">-</span></label>
<input type="range" id="price-slider" min="0" max="300" step="0.5" value="300">
<div id="slider-value">
<span id="slider-min">-</span>
<span id="slider-max">-</span>
</div>
<div id="visible-count"></div>
</div>
<div id="last-updated" class="map-panel"></div>
<div id="legend" class="map-panel">
<h3 id="legend-title">Prix régulier (¢/L)</h3>
<div class="legend-gradient"></div>
<div class="legend-labels">
<span id="min-price">-</span>
<span id="max-price">-</span>
</div>
<div id="map-stats"></div>
</div>
</div>
<!-- ── STATS PAGE ── -->
<div id="page-stats">
<h2>Statistiques des prix</h2>
<!-- Summary cards -->
<div class="stat-cards">
<article class="card">
<header><p>Régulier — Moyenne</p></header>
<p class="stat-value" id="sc-reg-avg">—</p>
<p class="stat-sub">¢/L</p>
</article>
<article class="card">
<header><p>Régulier — Min</p></header>
<p class="stat-value" id="sc-reg-min">—</p>
<p class="stat-sub">¢/L</p>
</article>
<article class="card">
<header><p>Régulier — Max</p></header>
<p class="stat-value" id="sc-reg-max">—</p>
<p class="stat-sub">¢/L</p>
</article>
<article class="card">
<header><p>Super — Moyenne</p></header>
<p class="stat-value" id="sc-sup-avg">—</p>
<p class="stat-sub">¢/L</p>
</article>
<article class="card">
<header><p>Diesel — Moyenne</p></header>
<p class="stat-value" id="sc-die-avg">—</p>
<p class="stat-sub">¢/L</p>
</article>
<article class="card">
<header><p>Stations</p></header>
<p class="stat-value" id="sc-count">—</p>
<p class="stat-sub">dernière mise à jour</p>
</article>
</div>
<!-- Chart -->
<div class="chart-wrap">
<h3>Évolution des prix</h3>
<p class="chart-subtitle">Prix moyen par carburant (¢/L)</p>
<div class="range-btns">
<button class="range-btn active" data-days="7">7 jours</button>
<button class="range-btn" data-days="30">30 jours</button>
<button class="range-btn" data-days="0">Tout</button>
</div>
<canvas id="stats-chart-canvas"></canvas>
<p class="no-data" id="chart-no-data" style="display:none;">Pas encore assez de données historiques.</p>
</div>
<!-- History table -->
<div class="chart-wrap">
<h3>Historique récent</h3>
<p class="chart-subtitle">10 dernières mises à jour</p>
<div class="table-wrap">
<table id="history-table">
<thead>
<tr>
<th>Date</th>
<th>Régulier moy.</th>
<th>Régulier min</th>
<th>Régulier max</th>
<th>Super moy.</th>
<th>Diesel moy.</th>
<th>Stations</th>
</tr>
</thead>
<tbody id="history-tbody">
<tr><td colspan="7" style="text-align:center;color:var(--muted-foreground);">Chargement...</td></tr>
</tbody>
</table>
</div>
</div>
</div>
</div><!-- #content -->
</div><!-- #app -->
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script> <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<script src="https://unpkg.com/leaflet.heat@0.2.0/dist/leaflet-heat.js"></script>
<script src="https://unpkg.com/leaflet.markercluster@1.5.3/dist/leaflet.markercluster.js"></script> <script src="https://unpkg.com/leaflet.markercluster@1.5.3/dist/leaflet.markercluster.js"></script>
<script src="https://unpkg.com/@knadh/oat/oat.min.js" defer></script>
<script src="https://cdn.jsdelivr.net/npm/chart.js@4/dist/chart.umd.min.js"></script>
<script> <script>
const map = L.map('map').setView([46.8, -71.2], 7); // ── Page navigation ──────────────────────────────────────
let mapInitialized = false;
let statsChart = null;
let currentDays = 7;
function showPage(name) {
document.getElementById('page-map').style.display = name === 'map' ? 'flex' : 'none';
document.getElementById('page-stats').style.display = name === 'stats' ? 'flex' : 'none';
document.getElementById('nav-map').removeAttribute('aria-current');
document.getElementById('nav-stats').removeAttribute('aria-current');
document.getElementById('nav-' + name).setAttribute('aria-current', 'page');
if (name === 'map' && mapInitialized) {
setTimeout(() => map.invalidateSize(), 50);
}
if (name === 'stats') {
loadStats(currentDays);
}
}
// ── Map setup ─────────────────────────────────────────────
const map = L.map('map', { zoomControl: false }).setView([46.8, -71.2], 7);
L.control.zoom({ position: 'topright' }).addTo(map);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', { L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap</a> | Données: <a href="https://regieessencequebec.ca">Régie de l\'énergie du Québec</a>', attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap</a> | Données: <a href="https://regieessencequebec.ca">Régie de l\'énergie du Québec</a>',
maxZoom: 18, maxZoom: 18,
}).addTo(map); }).addTo(map);
// State let currentFuel = 'regular';
let currentMode = 'stations'; let currentRegion = '';
let allStations = []; let allStations = [];
let minPrice = 0; let allMarkers = [];
let maxPrice = 300; let visibleSet = new Set();
let heatLayer = null; let minPrice = 0, maxPrice = 300;
let sliderTimer = null;
let clusterGroup = L.markerClusterGroup({ let clusterGroup = L.markerClusterGroup({
maxClusterRadius: 50, maxClusterRadius: 50,
spiderfyOnMaxZoom: true, spiderfyOnMaxZoom: true,
showCoverageOnHover: false, showCoverageOnHover: false,
zoomToBoundsOnClick: true, zoomToBoundsOnClick: true,
disableClusteringAtZoom: 14, disableClusteringAtZoom: 14,
iconCreateFunction: function(cluster) {
const children = cluster.getAllChildMarkers();
const prices = children.map(m => m.fuelPrices[currentFuel]).filter(p => p > 0);
const count = cluster.getChildCount();
let fill, label;
if (prices.length > 0) {
const avg = prices.reduce((a, b) => a + b, 0) / prices.length;
fill = priceColor(avg, minPrice, maxPrice);
label = avg.toFixed(1);
} else {
fill = '#9ca3af';
label = count;
}
const size = count < 10 ? 44 : count < 50 ? 52 : 60;
const r = size / 2;
const fs = count < 10 ? 11 : count < 50 ? 10 : 9;
const svg = `<svg class="pin-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 ${size} ${size}" width="${size}" height="${size}">
<circle cx="${r}" cy="${r}" r="${r - 2}" fill="${fill}" stroke="#fff" stroke-width="2.5"/>
<text x="${r}" y="${r + fs * 0.38}" text-anchor="middle" fill="#fff" font-size="${fs}" font-weight="700" font-family="sans-serif">${label}</text>
</svg>`;
return L.divIcon({ html: svg, className: '', iconSize: [size, size], iconAnchor: [r, r] });
},
}); });
fetch('/api/stations') fetch('/api/stations')
.then(r => r.json()) .then(r => r.json())
.then(data => { .then(data => {
document.getElementById('loading').style.display = 'none'; document.getElementById('loading').style.display = 'none';
const stations = data.stations; mapInitialized = true;
allStations = stations; allStations = data.stations;
// Populate region dropdown from data
const regions = [...new Set(allStations.map(s => s.region).filter(Boolean))].sort();
const sel = document.getElementById('region-select');
regions.forEach(r => {
const opt = document.createElement('option');
opt.value = r; opt.textContent = r;
sel.appendChild(opt);
});
sel.addEventListener('change', () => {
currentRegion = sel.value;
if (allStations.length) rebuildMarkers(true);
});
// Last updated
if (data.lastUpdated) { if (data.lastUpdated) {
const d = new Date(data.lastUpdated); const d = new Date(data.lastUpdated);
document.getElementById('last-updated').textContent = document.getElementById('last-updated').textContent =
@ -150,158 +461,319 @@
}); });
} }
const prices = stations.map(s => s.regular).filter(p => p > 0); document.getElementById('map-stats').textContent = allStations.length + ' stations';
minPrice = Math.min(...prices);
maxPrice = Math.max(...prices);
// Legend // Pre-build all markers once — reused for every slider update.
document.getElementById('min-price').textContent = minPrice.toFixed(1) + '¢'; prebuildMarkers();
document.getElementById('max-price').textContent = maxPrice.toFixed(1) + '¢'; map.addLayer(clusterGroup);
document.getElementById('stats').textContent = stations.length + ' stations'; document.getElementById('legend').style.display = 'block';
// Slider setup
const slider = document.getElementById('price-slider'); const slider = document.getElementById('price-slider');
slider.min = Math.floor(minPrice);
slider.max = Math.ceil(maxPrice);
slider.value = Math.ceil(maxPrice);
document.getElementById('slider-min').textContent = Math.floor(minPrice) + '¢';
document.getElementById('slider-max').textContent = Math.ceil(maxPrice) + '¢';
document.getElementById('slider-label').textContent = Math.ceil(maxPrice) + '¢/L';
// Build heatmap layer
// Each point gets an intensity based on its price.
// We set a floor of 0.25 so cheap stations are still clearly visible,
// and use a high 'max' so overlapping stations don't oversaturate to red.
const heatData = stations
.filter(s => s.regular > 0)
.map(s => {
const t = (s.regular - minPrice) / (maxPrice - minPrice);
const intensity = 0.25 + t * 0.75; // range [0.25 .. 1.0]
return [s.lat, s.lng, intensity];
});
heatLayer = L.heatLayer(heatData, {
radius: 22,
blur: 25,
maxZoom: 13,
max: 3.0,
minOpacity: 0.35,
gradient: {
0.0: '#313695',
0.15: '#4575b4',
0.3: '#74add1',
0.45: '#abd9e9',
0.55: '#fee090',
0.7: '#fdae61',
0.8: '#f46d43',
0.9: '#d73027',
1.0: '#a50026',
}
});
// Build all station markers
buildStationMarkers(maxPrice);
// Start in stations mode
setMode('stations');
// Slider events
slider.addEventListener('input', () => { slider.addEventListener('input', () => {
const val = parseFloat(slider.value); const val = parseFloat(slider.value);
document.getElementById('slider-label').textContent = val.toFixed(1) + '¢/L'; document.getElementById('slider-label').textContent = val.toFixed(1) + '¢/L';
buildStationMarkers(val); // Update label immediately; defer the heavy map work.
clearTimeout(sliderTimer);
sliderTimer = setTimeout(() => applyPriceFilter(val), 80);
}); });
}) })
.catch(err => { .catch(err => {
document.getElementById('loading').textContent = 'Erreur: ' + err.message; const loading = document.getElementById('loading');
loading.innerHTML = '<span style="color:var(--destructive,#ef4444)">Erreur: ' + err.message + '</span>';
setTimeout(() => { loading.style.display = 'none'; }, 4000);
}); });
// Mode toggle buttons document.querySelectorAll('.fuel-btn').forEach(btn => {
document.querySelectorAll('.mode-btn').forEach(btn => { btn.addEventListener('click', () => {
btn.addEventListener('click', () => setMode(btn.dataset.mode)); if (btn.dataset.fuel === currentFuel) return;
currentFuel = btn.dataset.fuel;
document.querySelectorAll('.fuel-btn').forEach(b => b.classList.toggle('active', b.dataset.fuel === currentFuel));
if (allStations.length) rebuildMarkers();
});
}); });
function setMode(mode) { // Add/remove only the markers that changed relative to the current filter.
currentMode = mode; function applyPriceFilter(priceMax, fitMap) {
const toAdd = [];
const toRemove = [];
document.querySelectorAll('.mode-btn').forEach(btn => { allStations.forEach((s, i) => {
btn.classList.toggle('active', btn.dataset.mode === mode); const price = s[currentFuel];
const inRegion = !currentRegion || s.region === currentRegion;
// Show grey markers (no data for this fuel) always within region; filter only priced ones
const visible = inRegion && (price <= 0 || price <= priceMax);
if (visible && !visibleSet.has(i)) {
toAdd.push(allMarkers[i]);
visibleSet.add(i);
} else if (!visible && visibleSet.has(i)) {
toRemove.push(allMarkers[i]);
visibleSet.delete(i);
}
}); });
if (mode === 'heatmap') { if (toRemove.length) clusterGroup.removeLayers(toRemove);
map.removeLayer(clusterGroup); if (toAdd.length) clusterGroup.addLayers(toAdd);
if (heatLayer) map.addLayer(heatLayer);
document.getElementById('legend').style.display = 'block'; document.getElementById('visible-count').textContent =
document.getElementById('slider-panel').style.display = 'none'; visibleSet.size + ' / ' + allStations.length + ' stations';
} else {
if (heatLayer) map.removeLayer(heatLayer); if (fitMap && currentRegion) {
map.addLayer(clusterGroup); const latlngs = allStations
document.getElementById('legend').style.display = 'none'; .filter(s => s.region === currentRegion)
document.getElementById('slider-panel').style.display = 'block'; .map(s => [s.lat, s.lng]);
if (latlngs.length > 0) {
map.fitBounds(L.latLngBounds(latlngs), { padding: [40, 40], maxZoom: 13 });
}
} }
} }
function buildStationMarkers(priceMax) { // Build all markers once at load time. Color is fixed by price; only
clusterGroup.clearLayers(); // visibility changes after this point.
let count = 0; function prebuildMarkers() {
rebuildMarkers();
allStations.forEach(s => {
if (s.regular <= 0 || s.regular > priceMax) return;
count++;
const color = priceColor(s.regular, minPrice, maxPrice);
const icon = L.divIcon({
html: pinSvg(color),
className: '',
iconSize: [25, 41],
iconAnchor: [12, 41],
popupAnchor: [1, -34],
});
const marker = L.marker([s.lat, s.lng], { icon });
let popup = `<strong>${s.name}</strong><br>`;
popup += `${s.brand}<br>`;
popup += `${s.address}<br>`;
popup += `<br><strong>Régulier:</strong> ${s.regular.toFixed(1)}¢/L`;
if (s.super > 0) popup += `<br><strong>Super:</strong> ${s.super.toFixed(1)}¢/L`;
if (s.diesel > 0) popup += `<br><strong>Diesel:</strong> ${s.diesel.toFixed(1)}¢/L`;
marker.bindPopup(popup);
clusterGroup.addLayer(marker);
});
document.getElementById('visible-count').textContent = count + ' / ' + allStations.length + ' stations';
} }
function pinSvg(fill) { function rebuildMarkers(fitMap) {
return `<svg class="pin-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 25 41" width="25" height="41"> // Clear existing markers from cluster
<path d="M12.5 0C5.6 0 0 5.6 0 12.5C0 22 12.5 41 12.5 41S25 22 25 12.5C25 5.6 19.4 0 12.5 0Z" clusterGroup.clearLayers();
fill="${fill}" stroke="#fff" stroke-width="1.5"/> visibleSet.clear();
<circle cx="12.5" cy="12.5" r="5" fill="#fff" opacity="0.9"/>
// Recompute min/max for the active fuel
const prices = allStations.map(s => s[currentFuel]).filter(p => p > 0);
minPrice = prices.length ? Math.min(...prices) : 0;
maxPrice = prices.length ? Math.max(...prices) : 300;
// Update slider range
const slider = document.getElementById('price-slider');
slider.min = Math.floor(minPrice);
slider.max = Math.ceil(maxPrice);
slider.value = Math.ceil(maxPrice);
document.getElementById('slider-min').textContent = Math.floor(minPrice) + '¢';
document.getElementById('slider-max').textContent = Math.ceil(maxPrice) + '¢';
document.getElementById('slider-label').textContent = Math.ceil(maxPrice) + '¢/L';
// Update legend
const fuelLabel = { regular: 'Régulier', super: 'Super', diesel: 'Diesel' }[currentFuel];
document.getElementById('legend-title').textContent = `Prix ${fuelLabel.toLowerCase()} (¢/L)`;
document.getElementById('min-price').textContent = minPrice.toFixed(1) + '¢';
document.getElementById('max-price').textContent = maxPrice.toFixed(1) + '¢';
const GREY = '#9ca3af';
allMarkers = allStations.map(s => {
const price = s[currentFuel];
const fill = price > 0 ? priceColor(price, minPrice, maxPrice) : GREY;
const label = price > 0 ? price.toFixed(1) : '—';
const icon = L.divIcon({
html: circleSvg(fill, label), className: '',
iconSize: [36, 36], iconAnchor: [18, 18], popupAnchor: [0, -20],
});
const marker = L.marker([s.lat, s.lng], { icon });
marker.fuelPrices = { regular: s.regular, super: s.super, diesel: s.diesel };
let popup = `<strong>${s.name}</strong><br>${s.brand}<br>${s.address}<br>`;
popup += `<br><strong>Régulier:</strong> ${s.regular.toFixed(1)}¢/L`;
if (s.super > 0) popup += `<br><strong>Super:</strong> ${s.super.toFixed(1)}¢/L`;
if (s.diesel > 0) popup += `<br><strong>Diesel:</strong> ${s.diesel.toFixed(1)}¢/L`;
marker.bindPopup(popup);
return marker;
});
applyPriceFilter(parseFloat(slider.value), fitMap);
}
function circleSvg(fill, label) {
return `<svg class="pin-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" width="36" height="36">
<circle cx="18" cy="18" r="17" fill="${fill}" stroke="#fff" stroke-width="2"/>
<text x="18" y="22" text-anchor="middle" fill="#fff" font-size="10" font-weight="700" font-family="sans-serif">${label}</text>
</svg>`; </svg>`;
} }
function priceColor(price, min, max) { function priceColor(price, min, max) {
const t = Math.max(0, Math.min(1, (price - min) / (max - min))); const t = Math.max(0, Math.min(1, (price - min) / (max - min)));
// green (cheap) → yellow → red (expensive)
const colors = [ const colors = [
[49, 54, 149], [22,163,74],[101,163,13],[202,138,4],[234,88,12],[220,38,38],
[69, 117, 180],
[116, 173, 209],
[171, 217, 233],
[254, 224, 144],
[253, 174, 97],
[244, 109, 67],
[215, 48, 39],
[165, 0, 38],
]; ];
const idx = Math.min(Math.floor(t * (colors.length - 1)), colors.length - 2); const idx = Math.min(Math.floor(t * (colors.length - 1)), colors.length - 2);
const frac = t * (colors.length - 1) - idx; const frac = t * (colors.length - 1) - idx;
const c0 = colors[idx], c1 = colors[idx + 1]; const c0 = colors[idx], c1 = colors[idx + 1];
const r = Math.round(c0[0] + (c1[0] - c0[0]) * frac); return `rgb(${Math.round(c0[0]+(c1[0]-c0[0])*frac)},${Math.round(c0[1]+(c1[1]-c0[1])*frac)},${Math.round(c0[2]+(c1[2]-c0[2])*frac)})`;
const g = Math.round(c0[1] + (c1[1] - c0[1]) * frac); }
const b = Math.round(c0[2] + (c1[2] - c0[2]) * frac);
return `rgb(${r},${g},${b})`; // ── Statistics page ───────────────────────────────────────
document.querySelectorAll('.range-btn').forEach(btn => {
btn.addEventListener('click', () => {
document.querySelectorAll('.range-btn').forEach(b => b.classList.remove('active'));
btn.classList.add('active');
currentDays = parseInt(btn.dataset.days);
loadStats(currentDays);
});
});
function loadStats(days) {
const url = '/api/stats?days=' + days;
fetch(url)
.then(r => r.json())
.then(data => {
const snaps = data.snapshots || [];
renderStatCards(snaps);
renderChart(snaps);
renderHistoryTable(snaps);
})
.catch(err => console.error('stats error:', err));
}
function fmt(v) {
return v > 0 ? v.toFixed(1) : '—';
}
// Like fmt() but appends the unit; shows '—' (no unit) for missing values.
function fmtUnit(v, unit) {
return v > 0 ? v.toFixed(1) + unit : '—';
}
function renderStatCards(snaps) {
// Use the latest snapshot for the summary cards
if (!snaps.length) return;
const last = snaps[snaps.length - 1];
document.getElementById('sc-reg-avg').textContent = fmt(last.regularAvg);
document.getElementById('sc-reg-min').textContent = fmt(last.regularMin);
document.getElementById('sc-reg-max').textContent = fmt(last.regularMax);
document.getElementById('sc-sup-avg').textContent = fmt(last.superAvg);
document.getElementById('sc-die-avg').textContent = fmt(last.dieselAvg);
document.getElementById('sc-count').textContent = last.stationCount || '—';
}
// Read a CSS variable from the root element (works for both light and dark).
function cssVar(name) {
return getComputedStyle(document.documentElement).getPropertyValue(name).trim();
}
function renderChart(snaps) {
const canvas = document.getElementById('stats-chart-canvas');
const noData = document.getElementById('chart-no-data');
if (!snaps.length) {
canvas.style.display = 'none';
noData.style.display = 'block';
if (statsChart) { statsChart.destroy(); statsChart = null; }
return;
}
canvas.style.display = 'block';
noData.style.display = 'none';
// Resolve theme-aware colours at render time.
const textColor = cssVar('--foreground') || (darkMode() ? '#e4e4e7' : '#18181b');
const gridColor = cssVar('--border') || (darkMode() ? '#3f3f46' : '#e4e4e7');
const tooltipBg = cssVar('--card') || (darkMode() ? '#18181b' : '#ffffff');
const tooltipText = cssVar('--card-foreground') || textColor;
const labels = snaps.map(s => {
const d = new Date(s.generatedAt);
return d.toLocaleString('fr-CA', { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' });
});
const pt = snaps.length > 60 ? 0 : 3;
const datasets = [
{
label: 'Régulier',
data: snaps.map(s => s.regularAvg > 0 ? +s.regularAvg.toFixed(2) : null),
borderColor: '#3b82f6', backgroundColor: 'rgba(59,130,246,0.1)',
tension: 0.3, fill: false, pointRadius: pt,
},
{
label: 'Super',
data: snaps.map(s => s.superAvg > 0 ? +s.superAvg.toFixed(2) : null),
borderColor: '#f59e0b', backgroundColor: 'rgba(245,158,11,0.1)',
tension: 0.3, fill: false, pointRadius: pt,
},
{
label: 'Diesel',
data: snaps.map(s => s.dieselAvg > 0 ? +s.dieselAvg.toFixed(2) : null),
borderColor: '#22c55e', backgroundColor: 'rgba(34,197,94,0.1)',
tension: 0.3, fill: false, pointRadius: pt,
},
];
const chartOpts = {
responsive: true,
maintainAspectRatio: true,
interaction: { mode: 'index', intersect: false },
plugins: {
legend: {
position: 'top',
labels: { color: textColor },
},
tooltip: {
backgroundColor: tooltipBg,
titleColor: tooltipText,
bodyColor: tooltipText,
borderColor: gridColor,
borderWidth: 1,
callbacks: {
label: ctx => ctx.dataset.label + ': ' + (ctx.parsed.y != null ? ctx.parsed.y.toFixed(1) + '¢/L' : '—'),
}
}
},
scales: {
x: {
ticks: { maxTicksLimit: 10, maxRotation: 30, color: textColor },
grid: { color: gridColor },
},
y: {
title: { display: true, text: '¢/L', color: textColor },
ticks: { callback: v => v + '¢', color: textColor },
grid: { color: gridColor },
}
}
};
if (statsChart) {
statsChart.data.labels = labels;
statsChart.data.datasets = datasets;
// Reapply theme-sensitive options in case theme changed since creation.
statsChart.options = chartOpts;
statsChart.update();
return;
}
statsChart = new Chart(canvas, { type: 'line', data: { labels, datasets }, options: chartOpts });
}
function darkMode() {
return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
}
// Re-render chart when system theme changes so colours update immediately.
if (window.matchMedia) {
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
if (statsChart) loadStats(currentDays);
});
}
function renderHistoryTable(snaps) {
const tbody = document.getElementById('history-tbody');
// Show last 10, most recent first
const rows = snaps.slice(-10).reverse();
if (!rows.length) {
tbody.innerHTML = '<tr><td colspan="7" style="text-align:center;color:var(--muted-foreground);">Aucune donnée</td></tr>';
return;
}
tbody.innerHTML = rows.map(s => {
const d = new Date(s.generatedAt).toLocaleString('fr-CA', {
year: 'numeric', month: 'short', day: 'numeric',
hour: '2-digit', minute: '2-digit'
});
return `<tr>
<td>${d}</td>
<td>${fmtUnit(s.regularAvg, '¢')}</td>
<td>${fmtUnit(s.regularMin, '¢')}</td>
<td>${fmtUnit(s.regularMax, '¢')}</td>
<td>${fmtUnit(s.superAvg, '¢')}</td>
<td>${fmtUnit(s.dieselAvg, '¢')}</td>
<td>${s.stationCount}</td>
</tr>`;
}).join('');
} }
</script> </script>
</body> </body>