# PSG Launcher — Release workflow
#
# Triggers on version tags:  git tag v1.2.3 && git push --tags
#
# Required Gitea repository secrets:
#   TAURI_SIGNING_PRIVATE_KEY          — from: npm run tauri signer generate
#   TAURI_SIGNING_PRIVATE_KEY_PASSWORD — (empty string is fine if no passphrase)
#   MANIFEST_SIGNING_KEY               — PEM content of manifest-private.pem
#   GITEA_TOKEN                        — a personal access token with repo write scope
#
# The workflow:
#   1. Builds the Tauri Windows installer (signed with Tauri's ed25519 key)
#   2. Signs apps.json with the manifest key
#   3. Creates a Gitea release with the installer attached
#   4. Pushes updated latest.json and apps.json.sig to the `releases` branch

name: Release

on:
  push:
    tags:
      - "v*"

jobs:
  build-windows:
    runs-on: windows-latest
    permissions:
      contents: write

    steps:
      # ── Checkout ───────────────────────────────────────────────────────────
      - name: Checkout
        uses: actions/checkout@v4

      # ── Toolchains ─────────────────────────────────────────────────────────
      - name: Set up Node.js 20
        uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: "npm"

      - name: Set up Rust (stable)
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: x86_64-pc-windows-msvc

      - name: Cache Rust build
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            src-tauri/target
          key: ${{ runner.os }}-cargo-${{ hashFiles('src-tauri/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo-

      # ── Install dependencies ───────────────────────────────────────────────
      - name: Install npm dependencies
        run: npm ci

      # ── Build Tauri release ────────────────────────────────────────────────
      - name: Build Tauri app (Windows)
        run: npm run tauri build -- --target x86_64-pc-windows-msvc
        env:
          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}

      # ── Collect artefacts ──────────────────────────────────────────────────
      - name: Locate installer and signature
        id: artefacts
        shell: pwsh
        run: |
          $installer = Get-ChildItem src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis `
            -Filter "*-setup.exe" -Recurse | Select-Object -First 1
          $sig = Get-Item "$($installer.FullName).sig"

          echo "installer=$($installer.FullName)" >> $env:GITHUB_OUTPUT
          echo "sig=$($sig.FullName)"             >> $env:GITHUB_OUTPUT
          echo "version=${GITHUB_REF_NAME#v}"     >> $env:GITHUB_OUTPUT

          $sigContent = Get-Content $sig.FullName -Raw
          echo "tauri_sig=$sigContent"            >> $env:GITHUB_OUTPUT

      # ── Update latest.json ─────────────────────────────────────────────────
      - name: Write latest.json
        shell: pwsh
        run: |
          $version  = "${{ steps.artefacts.outputs.version }}"
          $tauriSig = "${{ steps.artefacts.outputs.tauri_sig }}"
          $baseUrl  = "${{ gitea.server_url }}/${{ gitea.repository }}/releases/download/v$version"
          $filename = Split-Path "${{ steps.artefacts.outputs.installer }}" -Leaf

          $latest = @{
            version   = $version
            notes     = "Release $version"
            pub_date  = (Get-Date -Format "yyyy-MM-ddTHH:mm:ssZ")
            platforms = @{
              "windows-x86_64" = @{
                signature = $tauriSig.Trim()
                url       = "$baseUrl/$filename"
              }
            }
          }
          $latest | ConvertTo-Json -Depth 5 | Set-Content manifests/latest.json
          Write-Host "latest.json written"

      # ── Sign apps.json ─────────────────────────────────────────────────────
      - name: Sign apps manifest
        shell: pwsh
        env:
          MANIFEST_SIGNING_KEY: ${{ secrets.MANIFEST_SIGNING_KEY }}
        run: .\scripts\sign-manifest.ps1

      # ── Create Gitea release ───────────────────────────────────────────────
      - name: Create release and upload installer
        shell: pwsh
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          $tag      = "${{ github.ref_name }}"
          $version  = "${{ steps.artefacts.outputs.version }}"
          $installer= "${{ steps.artefacts.outputs.installer }}"
          $sig      = "${{ steps.artefacts.outputs.sig }}"
          $apiBase  = "${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}"
          $headers  = @{ Authorization = "token $env:GITEA_TOKEN"; "Content-Type" = "application/json" }

          # Create release
          $body = @{ tag_name = $tag; name = "PSG Launcher $tag"; draft = $false; prerelease = $false } | ConvertTo-Json
          $release = Invoke-RestMethod -Uri "$apiBase/releases" -Method Post -Headers $headers -Body $body
          $uploadUrl = "$apiBase/releases/$($release.id)/assets"

          # Upload installer
          $uploadHeaders = @{ Authorization = "token $env:GITEA_TOKEN" }
          Invoke-RestMethod -Uri "$uploadUrl`?name=$(Split-Path $installer -Leaf)" `
            -Method Post -Headers $uploadHeaders `
            -InFile $installer -ContentType "application/octet-stream"

          # Upload .sig file
          Invoke-RestMethod -Uri "$uploadUrl`?name=$(Split-Path $sig -Leaf)" `
            -Method Post -Headers $uploadHeaders `
            -InFile $sig -ContentType "text/plain"

          Write-Host "Release $tag created ✓"

      # ── Push manifests to releases branch ─────────────────────────────────
      - name: Push manifests to releases branch
        shell: pwsh
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          git config user.name  "Gitea Actions"
          git config user.email "actions@gitea"

          $remote = "${{ gitea.server_url }}/${{ gitea.repository }}.git"
          $authedRemote = $remote -replace "://", "://actions:$env:GITEA_TOKEN@"

          # Fetch or create the releases branch
          git fetch origin releases 2>$null
          git checkout -B releases origin/releases 2>$null || git checkout --orphan releases

          # Copy only the manifest files
          git checkout ${{ github.sha }} -- manifests/

          git add manifests/apps.json manifests/apps.json.sig manifests/latest.json
          git commit -m "chore: update manifests for ${{ github.ref_name }}" --allow-empty
          git push $authedRemote releases
          Write-Host "Manifests pushed to releases branch ✓"