param(
    [string]$ProxySubUrl = "",
    [switch]$NoOpen
)

$ErrorActionPreference = "Stop"
$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
Set-Location $repoRoot

function Require-Command {
    param([string]$Name)
    if (-not (Get-Command $Name -ErrorAction SilentlyContinue)) {
        throw "$Name is required. Please install Docker Desktop and make sure Docker Compose is available."
    }
}

function Set-EnvValue {
    param(
        [string]$Path,
        [string]$Key,
        [string]$Value
    )
    $line = "$Key=$Value"
    if (-not (Test-Path $Path)) {
        Set-Content -Path $Path -Value $line -Encoding utf8
        return
    }
    $content = Get-Content -Path $Path -ErrorAction SilentlyContinue
    $found = $false
    $escapedKey = [regex]::Escape($Key)
    $next = foreach ($item in $content) {
        if ($item -match "^$escapedKey=") {
            $found = $true
            $line
        } else {
            $item
        }
    }
    if (-not $found) {
        $next = @($next) + $line
    }
    Set-Content -Path $Path -Value $next -Encoding utf8
}

function Get-EnvValue {
    param(
        [string]$Path,
        [string]$Key,
        [string]$DefaultValue
    )
    if (Test-Path $Path) {
        $escapedKey = [regex]::Escape($Key)
        $match = Get-Content -Path $Path | Where-Object { $_ -match "^$escapedKey=" } | Select-Object -First 1
        if ($match) {
            return ($match -replace "^$escapedKey=", "")
        }
    }
    return $DefaultValue
}


function Set-YamlScalar {
    param(
        [string]$Path,
        [string]$Key,
        [string]$Value
    )
    $content = if (Test-Path $Path) { @(Get-Content -Path $Path) } else { @() }
    $escapedKey = [regex]::Escape($Key)
    $found = $false
    $updated = foreach ($line in $content) {
        if ($line -match "^${escapedKey}:") {
            $found = $true
            "${Key}: ${Value}"
        } else {
            $line
        }
    }
    if (-not $found) {
        $updated = @($updated) + "${Key}: ${Value}"
    }
    Set-Content -Path $Path -Value $updated -Encoding utf8
}

function Initialize-ProxyConfig {
    $configPath = "proxy/config.yaml"
    $examplePath = "proxy/config.example.yaml"
    $subscription = Get-EnvValue -Path ".env" -Key "PROXY_SUB_URL" -DefaultValue ""
    $userAgent = Get-EnvValue -Path ".env" -Key "PROXY_USER_AGENT" -DefaultValue "clash-verge/1.7.7"

    if ($subscription) {
        $tempPath = "$configPath.tmp"
        try {
            Invoke-WebRequest -Uri $subscription -Headers @{ "User-Agent" = $userAgent } -OutFile $tempPath -UseBasicParsing
            Move-Item -Force $tempPath $configPath
            Write-Host "Proxy subscription refreshed: $configPath"
        } finally {
            Remove-Item -Force $tempPath -ErrorAction SilentlyContinue
        }
    } elseif (-not (Test-Path $configPath)) {
        Copy-Item $examplePath $configPath
        Write-Host "PROXY_SUB_URL is empty. Created a DIRECT-only proxy config."
    }

    Set-YamlScalar -Path $configPath -Key "mixed-port" -Value "7890"
    Set-YamlScalar -Path $configPath -Key "allow-lan" -Value "true"
    Set-YamlScalar -Path $configPath -Key "bind-address" -Value "'*'"
    Set-YamlScalar -Path $configPath -Key "external-controller" -Value "'0.0.0.0:9090'"
}

Require-Command docker
docker compose version | Out-Null

if (-not (Test-Path ".env")) {
    Copy-Item ".env.example" ".env"
}

if ($ProxySubUrl) {
    Set-EnvValue -Path ".env" -Key "PROXY_SUB_URL" -Value $ProxySubUrl
}

New-Item -ItemType Directory -Force -Path "proxy", "state/cron", "state/login-profile", "state/browser-profiles", "DouYinSparkFlow/logs" | Out-Null
if (-not (Test-Path "proxy/config.yaml")) {
    Copy-Item "proxy/config.example.yaml" "proxy/config.yaml"
}
if (-not (Test-Path "state/cron/root") -or (Get-Item "state/cron/root").Length -eq 0) {
    @(
        "*/20 10-17 * * * cd /app && python main.py --doTask >> /app/logs/app.log 2>&1",
        "0 18 * * * cd /app && python main.py --doTask >> /app/logs/app.log 2>&1",
        "20 18 * * * cd /app && env SPARKFLOW_MANUAL_RUN=1 SPARKFLOW_MANUAL_UNSENT_ONLY=1 PYTHONUNBUFFERED=1 python main.py --doTask >> /app/logs/app.log 2>&1"
    ) | Set-Content -Path "state/cron/root" -Encoding utf8
}

Initialize-ProxyConfig

docker compose up -d --build

$webPort = Get-EnvValue -Path ".env" -Key "WEB_PORT" -DefaultValue "8787"
$url = "http://localhost:$webPort"
Write-Host "Douyin SparkFlow is running: $url"
Write-Host "Next: create the admin password, open the login desktop, scan the QR code, select target friends, and set the send window."
if (-not $NoOpen) {
    Start-Process $url
}