<#
.SYNOPSIS
  Upload pre-built NSIS artifacts to an existing Gitea release.

.DESCRIPTION
  Use when the tag v* is already pushed (e.g. release.ps1 succeeded up to
  push but failed on upload, or release was created manually without assets).
  If a release for the tag does not exist yet, it is created. If it exists,
  same-name assets are replaced.

.PARAMETER Tag
  Version tag, e.g. v0.3.0. Defaults to v<package.json version>.

.EXAMPLE
  pwsh scripts/upload-release-assets.ps1
  pwsh scripts/upload-release-assets.ps1 -Tag v0.3.0
#>
param(
  [string]$Tag
)

$ErrorActionPreference = 'Stop'

$repoOwner = 'AnRil'
$repoName  = 'laude'
$giteaHost = 'xn--90adajar8af4h.xn--p1ai/git'
$apiBase   = "https://$giteaHost/api/v1"

if (-not $env:GITEA_TOKEN) {
  Write-Error "GITEA_TOKEN not set. Set it via [Environment]::SetEnvironmentVariable('GITEA_TOKEN', '<value>', 'User') and open a new PowerShell session."
  exit 1
}

$root = Resolve-Path (Join-Path $PSScriptRoot '..')
Set-Location $root

if (-not $Tag) {
  $version = (Get-Content package.json | ConvertFrom-Json).version
  $Tag = "v$version"
}
$version = $Tag.TrimStart('v')

$installer = Join-Path 'release' "Exercise-Reminder-Setup-$version.exe"
$blockmap  = "$installer.blockmap"
$manifest  = Join-Path 'release' 'latest.yml'
foreach ($f in @($installer, $blockmap, $manifest)) {
  if (-not (Test-Path $f)) {
    Write-Error "Artifact not found: $f. Build first with: npm run dist"
    exit 1
  }
}

$headers = @{
  Authorization = "token $env:GITEA_TOKEN"
  Accept        = 'application/json'
}

# --- Find or create release ----------------------------------------------
Write-Host "Looking for existing release $Tag..." -ForegroundColor Cyan
$release = $null
try {
  $release = Invoke-RestMethod `
    -Uri "$apiBase/repos/$repoOwner/$repoName/releases/tags/$Tag" `
    -Method Get `
    -Headers $headers
  Write-Host "  Found release id=$($release.id)" -ForegroundColor DarkGray
} catch {
  if ($_.Exception.Response.StatusCode.value__ -eq 404) {
    Write-Host "  Not found, creating new release..." -ForegroundColor DarkGray

    $prev = $null
    try {
      $prevTagOutput = & git describe --tags --abbrev=0 "$Tag^" 2>$null
      if ($LASTEXITCODE -eq 0 -and $prevTagOutput) {
        $prev = $prevTagOutput.Trim()
      }
    } catch {
      $prev = $null
    }
    if ($prev) {
      $log = (& git log --pretty=format:"- %s" "$prev..$Tag") -join "`n"
    } else {
      # No prior tag — list last 10 commits up to this tag.
      $log = (& git log --pretty=format:"- %s" -n 10 "$Tag") -join "`n"
    }
    $body = "### Changes`n`n$log`n`n---`n`nInstaller below: run it; if app is already installed, it updates in place and keeps your settings."

    $payload = @{
      tag_name   = $Tag
      name       = "Exercise Reminder $Tag"
      body       = $body
      draft      = $false
      prerelease = $false
    } | ConvertTo-Json -Depth 5

    $release = Invoke-RestMethod `
      -Uri "$apiBase/repos/$repoOwner/$repoName/releases" `
      -Method Post `
      -Headers $headers `
      -Body $payload `
      -ContentType 'application/json'
    Write-Host "  Created release id=$($release.id)" -ForegroundColor Green
  } else {
    throw
  }
}

# --- Delete existing assets with same names (to allow re-upload) ---------
$existing = Invoke-RestMethod `
  -Uri "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets" `
  -Method Get `
  -Headers $headers
foreach ($asset in @($installer, $blockmap, $manifest)) {
  $name = Split-Path $asset -Leaf
  $found = $existing | Where-Object { $_.name -eq $name }
  if ($found) {
    Write-Host "Removing existing asset $name (id=$($found.id))..." -ForegroundColor Yellow
    Invoke-RestMethod `
      -Uri "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets/$($found.id)" `
      -Method Delete `
      -Headers $headers | Out-Null
  }
}

# --- Upload assets -------------------------------------------------------
# Use curl.exe (bundled with Win10+) because Invoke-RestMethod in PS 5.1
# chokes on large multipart uploads (>50MB) over slower connections.
$curlCmd = Get-Command curl.exe -ErrorAction SilentlyContinue
if ($curlCmd) {
  $curl = $curlCmd.Source
} else {
  $curl = "$env:SystemRoot\System32\curl.exe"
  if (-not (Test-Path $curl)) {
    Write-Error "curl.exe not found. Install via 'winget install curl' or add to PATH."
    exit 1
  }
}

foreach ($asset in @($installer, $blockmap, $manifest)) {
  $name = Split-Path $asset -Leaf
  $size = (Get-Item $asset).Length
  Write-Host ("Uploading {0} ({1:N1} MB)..." -f $name, ($size / 1MB)) -ForegroundColor Cyan
  $uri = "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets?name=$([uri]::EscapeDataString($name))"
  # -f: fail on HTTP errors; -s -S: silent but show errors; --data-binary @file
  & $curl `
    --fail-with-body `
    --silent --show-error `
    -H "Authorization: token $env:GITEA_TOKEN" `
    -H "Content-Type: application/octet-stream" `
    --data-binary "@$asset" `
    $uri
  if ($LASTEXITCODE -ne 0) {
    Write-Error "Upload failed for $name (curl exit $LASTEXITCODE)"
    exit 1
  }
}

$releaseUrl = "https://$giteaHost/$repoOwner/$repoName/releases/tag/$Tag"
Write-Host ""
Write-Host "Release assets uploaded" -ForegroundColor Green
Write-Host "  $releaseUrl"