#!/usr/bin/env pwsh

[CmdletBinding()]
param(
  [string]$EnvFile = $(
    if ($env:GITEA_ENV_FILE) {
      $env:GITEA_ENV_FILE
    } else {
      Join-Path $HOME ".codex/gitea.env"
    }
  ),
  [string]$Version = "0.5.1",
  [switch]$CheckConfig,
  [Parameter(ValueFromRemainingArguments = $true)]
  [string[]]$ServerArgs
)

$ErrorActionPreference = "Stop"
$utf8 = [System.Text.UTF8Encoding]::new($false)
[Console]::OutputEncoding = $utf8
$OutputEncoding = $utf8

if (-not (Test-Path -LiteralPath $EnvFile -PathType Leaf)) {
  throw "Gitea MCP 配置文件不存在：$EnvFile"
}

$values = @{}
foreach ($rawLine in Get-Content -LiteralPath $EnvFile) {
  $line = $rawLine.Trim()
  if (-not $line -or $line.StartsWith("#")) {
    continue
  }

  $pair = $line -split "=", 2
  if ($pair.Count -ne 2) {
    throw "Gitea MCP 配置行必须使用 KEY=VALUE 格式。"
  }

  $values[$pair[0].Trim()] = $pair[1].Trim()
}

foreach ($name in @("GITEA_URL", "GITEA_TOKEN")) {
  if (-not $values.ContainsKey($name) -or [string]::IsNullOrWhiteSpace($values[$name])) {
    throw "$name 未配置或为空。"
  }
}

try {
  $giteaUri = [Uri]$values["GITEA_URL"]
} catch {
  throw "GITEA_URL 不是有效 URL。"
}

if ($giteaUri.Scheme -notin @("http", "https")) {
  throw "GITEA_URL 只支持 http 或 https。"
}

if ($giteaUri.AbsolutePath.Trim("/") -ne "") {
  throw "GITEA_URL 必须填写实例根地址，不要包含 /api/v1；gitea-mcp 会自动追加 API 路径。"
}

if ($giteaUri.Scheme -eq "http" -and $values["GITEA_ALLOW_INSECURE_HTTP"] -ne "1") {
  throw "当前使用 HTTP。确认接受 Token 明文传输风险后，在私有配置中设置 GITEA_ALLOW_INSECURE_HTTP=1。"
}

foreach ($entry in $values.GetEnumerator()) {
  if ($entry.Key -like "GITEA_*") {
    Set-Item -Path "Env:$($entry.Key)" -Value $entry.Value
  }
}

$noProxyEntries = @($env:NO_PROXY -split "," | ForEach-Object { $_.Trim() } | Where-Object { $_ })
if ($noProxyEntries -notcontains $giteaUri.Host) {
  $noProxyEntries += $giteaUri.Host
}
$env:NO_PROXY = $noProxyEntries -join ","
$env:no_proxy = $env:NO_PROXY

if ($values["GITEA_DIRECT"] -eq "1") {
  foreach ($proxyVariable in @("ALL_PROXY", "all_proxy", "HTTP_PROXY", "http_proxy", "HTTPS_PROXY", "https_proxy")) {
    Remove-Item -Path "Env:$proxyVariable" -ErrorAction SilentlyContinue
  }
}

if ($CheckConfig) {
  Write-Output "Gitea MCP 配置有效：URL=$($giteaUri.GetLeftPart([UriPartial]::Authority))，Token 已设置，版本=$Version。"
  exit 0
}

$uvx = Get-Command uvx -ErrorAction Stop
$stderrLog = Join-Path ([IO.Path]::GetTempPath()) "gitea-mcp-$PID.stderr.log"
& $uvx.Source --from "gitea-mcp==$Version" gitea-mcp @ServerArgs 2>> $stderrLog
exit $LASTEXITCODE