$ErrorActionPreference = "Stop"
Set-StrictMode -Version Latest

$ProjectRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
Set-Location $ProjectRoot

Write-Host ""
Write-Host "=== YouTube Personal - Creation installateur Windows V2 ===" -ForegroundColor Cyan
Write-Host "Projet : $ProjectRoot"
Write-Host ""

if (-not (Get-Command flutter -ErrorAction SilentlyContinue)) {
    throw "Flutter est introuvable dans le PATH. Ouvre le terminal Flutter habituel puis relance ce script."
}

$PubspecPath = Join-Path $ProjectRoot "pubspec.yaml"
if (-not (Test-Path $PubspecPath)) {
    throw "pubspec.yaml introuvable. Copie ce pack a la racine de ton projet Flutter."
}

$Pubspec = Get-Content $PubspecPath -Raw
$Version = "1.0.0"
if ($Pubspec -match '(?m)^version:\s*([^\s+]+)(?:\+\S+)?\s*$') {
    $Version = $Matches[1].Trim()
}
Write-Host "[INFO] Version : $Version" -ForegroundColor DarkCyan

Write-Host ""
Write-Host "[1/3] Compilation Windows Release..." -ForegroundColor Yellow
flutter pub get
if ($LASTEXITCODE -ne 0) { throw "flutter pub get a echoue." }

flutter build windows --release
if ($LASTEXITCODE -ne 0) { throw "flutter build windows --release a echoue." }

$ReleaseDir = Join-Path $ProjectRoot "build\windows\x64\runner\Release"
$ExePath = Join-Path $ReleaseDir "youtube_personal.exe"
if (-not (Test-Path $ExePath)) {
    throw "Executable introuvable apres compilation : $ExePath"
}
Write-Host "[OK] Application Windows : $ExePath" -ForegroundColor Green

function Find-InnoSetupCompiler {
    # 1. PATH
    $Cmd = Get-Command ISCC.exe -ErrorAction SilentlyContinue
    if ($Cmd) { return $Cmd.Source }

    # 2. Emplacements standards Windows, y compris Program Files (x86)
    $PF64 = [Environment]::GetFolderPath([Environment+SpecialFolder]::ProgramFiles)
    $PF86 = [Environment]::GetFolderPath([Environment+SpecialFolder]::ProgramFilesX86)

    $Candidates = @()
    if ($PF86) {
        $Candidates += (Join-Path $PF86 "Inno Setup 6\ISCC.exe")
        $Candidates += (Join-Path $PF86 "Inno Setup 5\ISCC.exe")
    }
    if ($PF64) {
        $Candidates += (Join-Path $PF64 "Inno Setup 6\ISCC.exe")
        $Candidates += (Join-Path $PF64 "Inno Setup 5\ISCC.exe")
    }
    if ($env:LOCALAPPDATA) {
        $Candidates += (Join-Path $env:LOCALAPPDATA "Programs\Inno Setup 6\ISCC.exe")
        $Candidates += (Join-Path $env:LOCALAPPDATA "Programs\Inno Setup 5\ISCC.exe")
    }

    foreach ($Path in $Candidates) {
        if ($Path -and (Test-Path $Path)) { return $Path }
    }

    # 3. Registre: installations machine/utilisateur, 32 et 64 bits
    $RegistryRoots = @(
        "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*",
        "HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*",
        "HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*"
    )

    foreach ($Root in $RegistryRoots) {
        try {
            $Apps = Get-ItemProperty $Root -ErrorAction SilentlyContinue |
                Where-Object { $_.DisplayName -like "Inno Setup*" }
            foreach ($App in $Apps) {
                if ($App.InstallLocation) {
                    $Path = Join-Path $App.InstallLocation "ISCC.exe"
                    if (Test-Path $Path) { return $Path }
                }
            }
        } catch { }
    }

    # 4. Dernier recours: recherche ciblee dans les dossiers Inno Setup uniquement
    $Roots = @($PF86, $PF64, (Join-Path $env:LOCALAPPDATA "Programs")) |
        Where-Object { $_ -and (Test-Path $_) }
    foreach ($Root in $Roots) {
        try {
            $Dirs = Get-ChildItem -Path $Root -Directory -Filter "Inno Setup*" -ErrorAction SilentlyContinue
            foreach ($Dir in $Dirs) {
                $Path = Join-Path $Dir.FullName "ISCC.exe"
                if (Test-Path $Path) { return $Path }
            }
        } catch { }
    }

    return $null
}

Write-Host ""
Write-Host "[2/3] Detection de Inno Setup..." -ForegroundColor Yellow
$ISCC = Find-InnoSetupCompiler

if (-not $ISCC) {
    $Winget = Get-Command winget -ErrorAction SilentlyContinue
    if ($Winget) {
        Write-Host "[INFO] ISCC.exe non trouve. Tentative d'installation/reparation avec winget..."
        # Ne pas considerer 'deja installe / aucune mise a jour' comme une erreur fatale.
        & winget install --id JRSoftware.InnoSetup -e --accept-package-agreements --accept-source-agreements --silent
        $WingetExit = $LASTEXITCODE
        Write-Host "[INFO] winget termine avec le code $WingetExit. Nouvelle detection..."
        $ISCC = Find-InnoSetupCompiler
    }
}

if (-not $ISCC) {
    Write-Host ""
    Write-Host "Inno Setup semble installe mais ISCC.exe reste introuvable." -ForegroundColor Red
    Write-Host "Teste cette commande pour le localiser :" -ForegroundColor Yellow
    Write-Host 'Get-ChildItem "C:\Program Files*" -Filter ISCC.exe -Recurse -ErrorAction SilentlyContinue | Select-Object -ExpandProperty FullName' -ForegroundColor Cyan
    throw "ISCC.exe introuvable."
}

Write-Host "[OK] Inno Setup : $ISCC" -ForegroundColor Green

Write-Host ""
Write-Host "[3/3] Creation du Setup.exe..." -ForegroundColor Yellow
$InstallerDir = Join-Path $ProjectRoot "installer\windows"
$IssFile = Join-Path $InstallerDir "youtube_personal.iss"
$DistDir = Join-Path $ProjectRoot "dist"
New-Item -ItemType Directory -Force -Path $DistDir | Out-Null

if (-not (Test-Path $IssFile)) {
    throw "Fichier Inno Setup introuvable : $IssFile"
}

Push-Location $InstallerDir
try {
    & $ISCC "/DAppVersion=$Version" "/DSourceDir=$ReleaseDir" "/DOutputDir=$DistDir" $IssFile
    if ($LASTEXITCODE -ne 0) { throw "La compilation Inno Setup a echoue avec le code $LASTEXITCODE." }
}
finally {
    Pop-Location
}

$SetupPath = Join-Path $DistDir "YouTube_Personal_Setup_$Version.exe"
if (-not (Test-Path $SetupPath)) {
    throw "Le Setup n'a pas ete trouve a l'emplacement attendu : $SetupPath"
}

Write-Host ""
Write-Host "=============================================" -ForegroundColor Green
Write-Host " INSTALLATEUR WINDOWS CREE AVEC SUCCES" -ForegroundColor Green
Write-Host "=============================================" -ForegroundColor Green
Write-Host ""
Write-Host $SetupPath -ForegroundColor Cyan
Write-Host ""
Start-Process explorer.exe -ArgumentList $DistDir