## test_webserver.nim
## ==================
## Tests du module webserver : parsing HTTP, décodage du formulaire,
## application des réglages, rendu des pages et intégration réelle
## (serveur local 127.0.0.1 interrogé en HTTP).

import std/[unittest, httpclient, os, uri, tables, strutils]
import ../src/webserver
import ../src/config

proc tmpDir(): string =
  getAppFilename().parentDir / ".webdata_test"

suite "http helpers":
  test "parseRequest parses GET with query":
    let req = parseRequest("GET /help?lang=fr HTTP/1.1\r\nHost: 127.0.0.1\r\n\r\n")
    check req.verb == "GET"
    check req.path == "/help"
    check req.body == ""

  test "parseRequest parses POST with body":
    let req = parseRequest(
      "POST /settings HTTP/1.1\r\nContent-Length: 10\r\n\r\nworkMin=30")
    check req.verb == "POST"
    check req.path == "/settings"
    check req.body == "workMin=30"

  test "parseRequest decodes percent-encoding":
    let req = parseRequest("GET /settings%3Fx HTTP/1.1\r\n\r\n")
    check req.path == "/settings?x"

  test "htmlEscape escapes special characters":
    check htmlEscape("<a href=\"x\">&'") == "&lt;a href=&quot;x&quot;&gt;&amp;&#39;"

  test "parseForm decodes urlencoded pairs":
    let f = parseForm("workMin=30&lang=fr&soundEnabled=on&note=Hello%20world")
    check f["workMin"] == "30"
    check f["lang"] == "fr"
    check f["soundEnabled"] == "on"
    check f["note"] == "Hello world"

suite "applySettings":
  test "applies a full form":
    let base = defaultConfig()
    let form = parseForm("workMin=40&shortBreakMin=8&longBreakMin=20&" &
      "cyclesBeforeLongBreak=5&dailyGoal=6&lang=en&activeProfile=Sprint&" &
      "soundEnabled=on&doNotDisturb=on&" &
      "reminders_json=" & encodeUrl("""[{"text":"Boire de l'eau","enabled":true}]"""))
    let cfg = applySettings(base, form)
    check cfg.workMin == 40
    check cfg.shortBreakMin == 8
    check cfg.longBreakMin == 20
    check cfg.cyclesBeforeLongBreak == 5
    check cfg.dailyGoal == 6
    check cfg.lang == "en"
    check cfg.activeProfile == "Sprint"
    check cfg.soundEnabled
    check cfg.doNotDisturb
    check not cfg.autoStart
    check cfg.healthReminders.len == 1
    check cfg.healthReminders[0].text == "Boire de l'eau"

  test "invalid values fall back to current ones":
    let base = defaultConfig()
    let form = parseForm("workMin=abc&lang=zz&activeProfile=Inexistant")
    let cfg = applySettings(base, form)
    check cfg.workMin == base.workMin
    check cfg.lang == "auto"
    check cfg.activeProfile == base.activeProfile

suite "rendering":
  test "pages contain expected content":
    var cfg = defaultConfig()
    cfg.lang = "fr"   # langue fixe : le rendu ne dépend pas du système
    check "NimPulse" in renderHelp(cfg)
    check "Pomodoro" in renderHelp(cfg)
    check "Statistiques" in renderStats(cfg)
    check "Réglages" in renderSettings(cfg)
    check "name=\"workMin\"" in renderSettings(cfg)
    check "reminders_json" in renderSettings(cfg)

suite "integration (local HTTP server)":
  test "GET routes work and settings POST persists":
    let dir = tmpDir()
    removeDir(dir)
    createDir(dir)
    # Configuration initiale en français : le rendu est déterministe.
    var initCfg = defaultConfig()
    initCfg.lang = "fr"
    saveConfigTo(initCfg, dir / "config.json")
    setDataDirOverride(dir)
    defer: setDataDirOverride("")

    let port = startWebServer()
    check port > 0
    defer: stopWebServer()

    let base = "http://127.0.0.1:" & $port
    let client = newHttpClient()

    let help = client.getContent(base & "/help")
    check "NimPulse" in help

    let stats = client.getContent(base & "/stats")
    check "Statistiques" in stats

    let settings = client.getContent(base & "/settings")
    check "name=\"workMin\"" in settings

    # Sauvegarde via POST (comme le ferait le navigateur).
    let body = "workMin=33&shortBreakMin=6&longBreakMin=18&cyclesBeforeLongBreak=4&" &
      "dailyGoal=5&lang=fr&activeProfile=Classique&" &
      "reminders_json=" & encodeUrl(
        """[{"text":"Étire-toi","enabled":true},{"text":"Bois de l'eau","enabled":false}]""")
    let resp = client.postContent(base & "/settings", body)
    check "Réglages enregistrés" in resp

    # Le fichier config.json a été écrit dans le répertoire de test.
    let saved = loadConfigFrom(dir / "config.json")
    check saved.workMin == 33
    check saved.dailyGoal == 5
    check saved.lang == "fr"
    check saved.healthReminders.len == 2
    check saved.healthReminders[1].enabled == false

    # Le drapeau de rechargement est posé puis consommé.
    check consumeSettingsChanged()
    check not consumeSettingsChanged()

    # La page réglages reflète les nouvelles valeurs.
    let settings2 = client.getContent(base & "/settings")
    check "value=\"33\"" in settings2

    removeDir(dir)