name: Desktop Release Candidate

on:
  workflow_dispatch:
    inputs:
      artifact_base_url:
        description: "Versioned HTTPS prefix for immutable desktop artifacts, for example https://ctms.example.com/desktop-updates/stable/v0.1.0/"
        required: true
        type: string
  push:
    tags:
      - "v*"

permissions:
  contents: read

concurrency:
  group: desktop-release-candidate-${{ github.ref }}
  cancel-in-progress: false

jobs:
  release-policy:
    name: Resolve desktop release signing policy
    runs-on: ubuntu-latest
    outputs:
      platform_signing_mode: ${{ steps.policy.outputs.platform_signing_mode }}
      macos_signing: ${{ steps.policy.outputs.macos_signing }}
      windows_signing: ${{ steps.policy.outputs.windows_signing }}
      artifact_label: ${{ steps.policy.outputs.artifact_label }}
      warning_required: ${{ steps.policy.outputs.warning_required }}
    defaults:
      run:
        working-directory: frontend
    steps:
      - name: Checkout release source
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: "22.13"

      - name: Resolve version-scoped signing policy
        id: policy
        shell: bash
        run: npm run desktop:release-policy:check -- --require-tag --github-output "${GITHUB_OUTPUT}"

  macos-release-candidate:
    name: macOS release candidate
    needs: release-policy
    runs-on: macos-latest
    defaults:
      run:
        working-directory: frontend
    env:
      VITE_BUILD_CHANNEL: release
      VITE_BUILD_COMMIT: ${{ github.sha }}
      RELEASE_BUILD: "true"
      DESKTOP_RELEASE_PLATFORM: macos
      DESKTOP_PLATFORM_SIGNING_MODE: ${{ needs.release-policy.outputs.platform_signing_mode }}
      REQUIRE_UPDATER_SIGNING: "true"
      REQUIRE_DESKTOP_SIGNING: ${{ needs.release-policy.outputs.platform_signing_mode == 'signed' && 'true' || 'false' }}
      ALLOW_UNSIGNED_PLATFORM_RELEASE: ${{ needs.release-policy.outputs.platform_signing_mode == 'unsigned-exception' && 'true' || 'false' }}
      DESKTOP_UPDATE_BASE_URL: ${{ github.event_name == 'workflow_dispatch' && inputs.artifact_base_url || vars.DESKTOP_UPDATE_BASE_URL }}
      TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
      TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
      APPLE_ID: ${{ secrets.APPLE_ID }}
      APPLE_PASSWORD: ${{ secrets.APPLE_PASSWORD }}
      APPLE_TEAM_ID: ${{ secrets.APPLE_TEAM_ID }}
      APPLE_CERTIFICATE: ${{ secrets.APPLE_CERTIFICATE }}
      APPLE_CERTIFICATE_PASSWORD: ${{ secrets.APPLE_CERTIFICATE_PASSWORD }}
      APPLE_SIGNING_IDENTITY: ${{ secrets.APPLE_SIGNING_IDENTITY }}
    steps:
      - name: Checkout release source
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: "22.13"
          cache: npm
          cache-dependency-path: frontend/package-lock.json

      - name: Enforce release tag context
        shell: bash
        run: |
          if [[ "${GITHUB_REF_TYPE}" != "tag" ]]; then
            echo "Desktop release candidates must run from a vX.Y.Z tag."
            exit 1
          fi
          expected_tag="v$(node -p "require('./package.json').version")"
          if [[ "${GITHUB_REF_NAME}" != "${expected_tag}" ]]; then
            echo "Release tag ${GITHUB_REF_NAME} does not match package version ${expected_tag}."
            exit 1
          fi

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: aarch64-apple-darwin,x86_64-apple-darwin

      - name: Install dependencies
        run: npm ci

      - name: Audit dependencies
        run: npm audit

      - name: Check release build metadata and signing environment
        run: npm run release:env:check

      - name: Check desktop release readiness
        run: npm run desktop:release-readiness:check

      - name: Check synchronized client version
        run: npm run version:check

      - name: Check runtime boundary
        run: npm run runtime:check

      - name: Check desktop release and security gate
        run: npm run desktop:release:check

      - name: Check UI contract
        run: npm run ui:contract

      - name: Type check
        run: npm run type-check

      - name: Unit tests
        run: npm run test:unit

      - name: Build Web artifact
        run: npm run build

      - name: Build Apple-signed and notarized Universal macOS artifacts
        if: needs.release-policy.outputs.platform_signing_mode == 'signed'
        run: npm run desktop:build:macos-release -- --ci

      - name: Build ad-hoc Universal macOS artifacts
        if: needs.release-policy.outputs.platform_signing_mode == 'unsigned-exception'
        run: npm run desktop:build:macos-unsigned-release -- --ci

      - name: Verify and stage macOS artifacts
        shell: bash
        run: |
          app="$(find src-tauri/target -path '*/release/bundle/macos/*.app' -print -quit)"
          artifact="$(find src-tauri/target -path '*/release/bundle/macos/*.app.tar.gz' -print -quit)"
          dmg="$(find src-tauri/target -path '*/release/bundle/dmg/*.dmg' -print -quit)"
          if [[ -z "${app}" || -z "${artifact}" || -z "${dmg}" || ! -s "${artifact}.sig" ]]; then
            echo "macOS app, updater artifact/signature, and DMG are all required."
            exit 1
          fi

          codesign --verify --deep --strict --verbose=2 "${app}"
          if [[ "${DESKTOP_PLATFORM_SIGNING_MODE}" == "signed" ]]; then
            spctl --assess --type execute --verbose=2 "${app}"
            xcrun stapler validate "${app}"
            xcrun stapler validate "${dmg}"
          else
            signature_info="$(codesign -dv --verbose=4 "${app}" 2>&1)"
            if ! grep -q "Signature=adhoc" <<<"${signature_info}"; then
              echo "The macOS unsigned-platform exception must produce an ad-hoc signed app."
              exit 1
            fi
          fi

          stage="src-tauri/target/desktop-release-macos"
          mkdir -p "${stage}"
          if [[ "${DESKTOP_PLATFORM_SIGNING_MODE}" == "unsigned-exception" ]]; then
            artifact_name="$(basename "${artifact}" .app.tar.gz)_UNSIGNED.app.tar.gz"
            dmg_name="$(basename "${dmg}" .dmg)_UNSIGNED.dmg"
            cp "${artifact}" "${stage}/${artifact_name}"
            cp "${artifact}.sig" "${stage}/${artifact_name}.sig"
            cp "${dmg}" "${stage}/${dmg_name}"
            cp desktop-release-unsigned-warning.txt "${stage}/UNSIGNED-PLATFORM-RELEASE.txt"
          else
            cp "${artifact}" "${artifact}.sig" "${dmg}" "${stage}/"
          fi

      - name: Upload macOS candidate artifacts
        uses: actions/upload-artifact@v4
        with:
          name: ctms-desktop-macos-${{ github.ref_name }}-${{ needs.release-policy.outputs.artifact_label }}
          path: frontend/src-tauri/target/desktop-release-macos/*
          if-no-files-found: error

  windows-release-candidate:
    name: Windows release candidate
    needs: release-policy
    runs-on: windows-latest
    defaults:
      run:
        working-directory: frontend
    env:
      VITE_BUILD_CHANNEL: release
      VITE_BUILD_COMMIT: ${{ github.sha }}
      RELEASE_BUILD: "true"
      DESKTOP_RELEASE_PLATFORM: windows
      DESKTOP_PLATFORM_SIGNING_MODE: ${{ needs.release-policy.outputs.platform_signing_mode }}
      REQUIRE_UPDATER_SIGNING: "true"
      REQUIRE_WINDOWS_SIGNING: ${{ needs.release-policy.outputs.platform_signing_mode == 'signed' && 'true' || 'false' }}
      ALLOW_UNSIGNED_PLATFORM_RELEASE: ${{ needs.release-policy.outputs.platform_signing_mode == 'unsigned-exception' && 'true' || 'false' }}
      DESKTOP_UPDATE_BASE_URL: ${{ github.event_name == 'workflow_dispatch' && inputs.artifact_base_url || vars.DESKTOP_UPDATE_BASE_URL }}
      TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
      TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
      WINDOWS_CERTIFICATE: ${{ secrets.WINDOWS_CERTIFICATE }}
      WINDOWS_CERTIFICATE_PASSWORD: ${{ secrets.WINDOWS_CERTIFICATE_PASSWORD }}
      WINDOWS_TIMESTAMP_URL: ${{ vars.WINDOWS_TIMESTAMP_URL }}
    steps:
      - name: Checkout release source
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: "22.13"
          cache: npm
          cache-dependency-path: frontend/package-lock.json

      - name: Enforce release tag context
        shell: pwsh
        run: |
          if ($env:GITHUB_REF_TYPE -ne "tag") {
            throw "Desktop release candidates must run from a vX.Y.Z tag."
          }
          $expectedTag = "v$(node -p "require('./package.json').version")"
          if ($env:GITHUB_REF_NAME -ne $expectedTag) {
            throw "Release tag $env:GITHUB_REF_NAME does not match package version $expectedTag."
          }

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Install dependencies
        run: npm ci

      - name: Audit dependencies
        run: npm audit

      - name: Check release build metadata and signing environment
        run: npm run release:env:check

      - name: Check desktop release readiness
        run: npm run desktop:release-readiness:check

      - name: Check synchronized client version
        run: npm run version:check

      - name: Check runtime boundary
        run: npm run runtime:check

      - name: Check desktop release and security gate
        run: npm run desktop:release:check

      - name: Check UI contract
        run: npm run ui:contract

      - name: Type check
        run: npm run type-check

      - name: Unit tests
        run: npm run test:unit

      - name: Build Web artifact
        run: npm run build

      - name: Import Windows code-signing certificate
        if: needs.release-policy.outputs.platform_signing_mode == 'signed'
        shell: pwsh
        run: |
          $pfxPath = Join-Path $env:RUNNER_TEMP "ctms-windows-signing.pfx"
          $encodedCertificate = $env:WINDOWS_CERTIFICATE `
            -replace "-----BEGIN [^-]+-----", "" `
            -replace "-----END [^-]+-----", "" `
            -replace "\s", ""
          [IO.File]::WriteAllBytes($pfxPath, [Convert]::FromBase64String($encodedCertificate))
          $password = ConvertTo-SecureString $env:WINDOWS_CERTIFICATE_PASSWORD -AsPlainText -Force
          $importedCertificates = Import-PfxCertificate -FilePath $pfxPath -CertStoreLocation "Cert:\CurrentUser\My" -Password $password -Exportable:$false
          $certificate = $importedCertificates | Where-Object { $_.HasPrivateKey } | Select-Object -First 1
          if (-not $certificate -or -not $certificate.HasPrivateKey) {
            throw "The imported Windows code-signing certificate is missing its private key."
          }
          $now = Get-Date
          if ($certificate.NotBefore -gt $now -or $certificate.NotAfter -le $now) {
            throw "The Windows code-signing certificate is not currently valid."
          }
          $codeSigningEku = $certificate.EnhancedKeyUsageList | Where-Object { $_.ObjectId.Value -eq "1.3.6.1.5.5.7.3.3" }
          if (-not $codeSigningEku) {
            throw "The Windows certificate does not contain the Code Signing enhanced key usage."
          }
          "WINDOWS_CERTIFICATE_THUMBPRINT=$($certificate.Thumbprint)" | Out-File -FilePath $env:GITHUB_ENV -Append
          Remove-Item $pfxPath -Force

      - name: Write signed Windows Tauri config
        if: needs.release-policy.outputs.platform_signing_mode == 'signed'
        shell: pwsh
        run: |
          $config = @{
            bundle = @{
              windows = @{
                certificateThumbprint = $env:WINDOWS_CERTIFICATE_THUMBPRINT
                digestAlgorithm = "sha256"
                timestampUrl = $env:WINDOWS_TIMESTAMP_URL
                tsp = $true
              }
            }
          } | ConvertTo-Json -Depth 8
          Set-Content -Path "tauri.windows.release.conf.json" -Value $config -Encoding utf8
          Get-Content "tauri.windows.release.conf.json"

      - name: Build signed Windows NSIS artifacts
        if: needs.release-policy.outputs.platform_signing_mode == 'signed'
        timeout-minutes: 30
        run: npm run desktop:build:windows-release -- --config tauri.windows.release.conf.json --ci

      - name: Build unsigned Windows NSIS artifacts
        if: needs.release-policy.outputs.platform_signing_mode == 'unsigned-exception'
        timeout-minutes: 30
        run: npm run desktop:build:windows-release -- --ci

      - name: Verify platform signing mode and stage Windows artifacts
        shell: pwsh
        run: |
          $bundleDir = "src-tauri/target/release/bundle/nsis"
          $installers = @(Get-ChildItem -Path $bundleDir -Filter "*.exe" -File)
          $updaters = @(Get-ChildItem -Path $bundleDir -Filter "*.nsis.zip" -File)
          $appExecutables = @(Get-ChildItem -Path "src-tauri/target/release" -Filter "*.exe" -File)
          if ($installers.Count -ne 1 -or $updaters.Count -ne 1 -or $appExecutables.Count -eq 0) {
            throw "Exactly one NSIS installer/updater and at least one application executable are required."
          }

          $signaturePath = "$($updaters[0].FullName).sig"
          if (-not (Test-Path $signaturePath) -or (Get-Item $signaturePath).Length -eq 0) {
            throw "The Windows updater signature is missing or empty."
          }

          foreach ($executable in @($appExecutables + $installers)) {
            $signature = Get-AuthenticodeSignature -FilePath $executable.FullName
            if ($env:DESKTOP_PLATFORM_SIGNING_MODE -eq "signed") {
              if ($signature.Status -ne "Valid" -or -not $signature.SignerCertificate -or -not $signature.TimeStamperCertificate) {
                throw "Authenticode signature or RFC 3161 timestamp is invalid for $($executable.FullName): $($signature.StatusMessage)"
              }
            } elseif ($signature.Status -ne "NotSigned") {
              throw "The Windows unsigned-platform exception must produce an Authenticode-unsigned executable: $($executable.FullName) returned $($signature.Status)."
            }
          }

          $stage = "src-tauri/target/desktop-release-windows"
          New-Item -ItemType Directory -Path $stage -Force | Out-Null
          if ($env:DESKTOP_PLATFORM_SIGNING_MODE -eq "unsigned-exception") {
            $installerName = $installers[0].Name -replace '\.exe$', '_UNSIGNED.exe'
            $updaterName = $updaters[0].Name -replace '\.nsis\.zip$', '_UNSIGNED.nsis.zip'
            Copy-Item $installers[0].FullName -Destination (Join-Path $stage $installerName)
            Copy-Item $updaters[0].FullName -Destination (Join-Path $stage $updaterName)
            Copy-Item $signaturePath -Destination (Join-Path $stage "$updaterName.sig")
            Copy-Item "desktop-release-unsigned-warning.txt" -Destination (Join-Path $stage "UNSIGNED-PLATFORM-RELEASE.txt")
          } else {
            Copy-Item $installers[0].FullName, $updaters[0].FullName, $signaturePath -Destination $stage
          }

      - name: Remove Windows signing certificate
        if: always()
        shell: pwsh
        run: |
          if ($env:WINDOWS_CERTIFICATE_THUMBPRINT) {
            Remove-Item "Cert:\CurrentUser\My\$env:WINDOWS_CERTIFICATE_THUMBPRINT" -Force -ErrorAction SilentlyContinue
          }
          Remove-Item (Join-Path $env:RUNNER_TEMP "ctms-windows-signing.pfx") -Force -ErrorAction SilentlyContinue
          Remove-Item "tauri.windows.release.conf.json" -Force -ErrorAction SilentlyContinue

      - name: Upload Windows candidate artifacts
        uses: actions/upload-artifact@v4
        with:
          name: ctms-desktop-windows-${{ github.ref_name }}-${{ needs.release-policy.outputs.artifact_label }}
          path: frontend/src-tauri/target/desktop-release-windows/*
          if-no-files-found: error

  aggregate-release-candidate:
    name: Verify combined desktop release directory
    needs:
      - release-policy
      - macos-release-candidate
      - windows-release-candidate
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: frontend
    env:
      DESKTOP_UPDATE_BASE_URL: ${{ github.event_name == 'workflow_dispatch' && inputs.artifact_base_url || vars.DESKTOP_UPDATE_BASE_URL }}
    steps:
      - name: Checkout release source
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: "22.13"

      - name: Download macOS candidate artifacts
        uses: actions/download-artifact@v4
        with:
          name: ctms-desktop-macos-${{ github.ref_name }}-${{ needs.release-policy.outputs.artifact_label }}
          path: frontend/src-tauri/target/desktop-release-input/macos

      - name: Download Windows candidate artifacts
        uses: actions/download-artifact@v4
        with:
          name: ctms-desktop-windows-${{ github.ref_name }}-${{ needs.release-policy.outputs.artifact_label }}
          path: frontend/src-tauri/target/desktop-release-input/windows

      - name: Create desktop release provenance
        run: npm run desktop:release-provenance:create -- --macos-signing "${{ needs.release-policy.outputs.macos_signing }}" --windows-signing "${{ needs.release-policy.outputs.windows_signing }}" --output src-tauri/target/desktop-release-input/DESKTOP-RELEASE-PROVENANCE.json

      - name: Create combined desktop update feed
        shell: bash
        run: |
          mapfile -t mac_artifacts < <(find src-tauri/target/desktop-release-input/macos -name '*.app.tar.gz' -type f)
          mapfile -t dmgs < <(find src-tauri/target/desktop-release-input/macos -name '*.dmg' -type f)
          mapfile -t windows_artifacts < <(find src-tauri/target/desktop-release-input/windows -name '*.nsis.zip' -type f)
          mapfile -t installers < <(find src-tauri/target/desktop-release-input/windows -name '*.exe' -type f)
          if [[ ${#mac_artifacts[@]} -ne 1 || ${#dmgs[@]} -ne 1 || ${#windows_artifacts[@]} -ne 1 || ${#installers[@]} -ne 1 ]]; then
            echo "Exactly one macOS updater/DMG and one Windows updater/installer are required."
            exit 1
          fi

          include_args=(--include "${dmgs[0]}" --include "${installers[0]}" --include src-tauri/target/desktop-release-input/DESKTOP-RELEASE-PROVENANCE.json)
          notes_args=()
          if [[ "${{ needs.release-policy.outputs.warning_required }}" == "true" ]]; then
            mapfile -t warnings < <(find src-tauri/target/desktop-release-input/macos -name 'UNSIGNED-PLATFORM-RELEASE.txt' -type f)
            if [[ ${#warnings[@]} -ne 1 ]]; then
              echo "The unsigned-platform release warning is required."
              exit 1
            fi
            include_args+=(--include "${warnings[0]}")
            notes_args+=(--notes "UNSIGNED PLATFORM RELEASE: macOS is ad-hoc signed and not notarized; Windows is not Authenticode-signed. Gatekeeper and SmartScreen warnings are expected. Verify tag, commit, updater signatures, and SHA256SUMS.txt before installation.")
          fi

          npm run desktop:update-feed:create -- \
            --artifact "${mac_artifacts[0]}" \
            --platform-artifact "windows-x86_64=${windows_artifacts[0]}" \
            "${include_args[@]}" \
            "${notes_args[@]}" \
            --output-dir src-tauri/target/desktop-release-feed \
            --base-url "${DESKTOP_UPDATE_BASE_URL}"

      - name: Verify combined desktop update feed
        run: npm run desktop:update-feed:check -- --feed src-tauri/target/desktop-release-feed/latest.json --artifacts-dir src-tauri/target/desktop-release-feed --base-url "${DESKTOP_UPDATE_BASE_URL}" --require-platform windows-x86_64 --require-provenance

      - name: Upload verified desktop release directory
        uses: actions/upload-artifact@v4
        with:
          name: ctms-desktop-release-${{ github.ref_name }}-${{ needs.release-policy.outputs.artifact_label }}
          path: frontend/src-tauri/target/desktop-release-feed/*
          if-no-files-found: error