name: Build & Release Client (Windows & Android)

on:
  push:
    tags:
      - 'v*'

  workflow_dispatch:
    inputs:
      tag_name:
        description: 'Release tag (e.g. v1.0.0). Leave empty to use pubspec.yaml version.'
        required: false
        default: ''
        type: string

jobs:
  build-and-release:
    name: Build Windows & Android Artifacts
    runs-on: windows-latest

    permissions:
      contents: write

    steps:
      # ------------------------------------------------------------
      # Checkout
      # ------------------------------------------------------------
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      # ------------------------------------------------------------
      # Java
      # ------------------------------------------------------------
      - name: Setup Java
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: '17'
          cache: gradle

      - name: Verify Java
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          Write-Host "JAVA_HOME = $env:JAVA_HOME"

          if (-not $env:JAVA_HOME) {
            throw "JAVA_HOME is not set."
          }

          if (-not (Test-Path "$env:JAVA_HOME\bin\java.exe")) {
            throw "Java executable was not found at $env:JAVA_HOME\bin\java.exe"
          }

          & "$env:JAVA_HOME\bin\java.exe" -version

      # ------------------------------------------------------------
      # Flutter
      # ------------------------------------------------------------
      - name: Setup Flutter
        uses: subosito/flutter-action@v2
        with:
          channel: stable
          cache: true

      - name: Flutter Doctor
        working-directory: frontend
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'
          flutter doctor -v

      # ------------------------------------------------------------
      # Android / Gradle Java Fix
      # ------------------------------------------------------------
      - name: Fix Android Gradle Java Configuration
        working-directory: frontend
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          $gradleProperties = "android\gradle.properties"

          if (Test-Path $gradleProperties) {
            Write-Host "Checking $gradleProperties"

            $content = Get-Content $gradleProperties

            $filtered = $content | Where-Object {
              $_ -notmatch '^\s*org\.gradle\.java\.home\s*='
            }

            if ($filtered.Count -ne $content.Count) {
              Write-Host "Removing stale org.gradle.java.home configuration..."
              Set-Content `
                -Path $gradleProperties `
                -Value $filtered `
                -Encoding utf8
            }
            else {
              Write-Host "No org.gradle.java.home override found."
            }
          }
          else {
            Write-Host "$gradleProperties does not exist."
          }

          Write-Host ""
          Write-Host "Java used by GitHub Actions:"
          Write-Host "JAVA_HOME = $env:JAVA_HOME"

          & "$env:JAVA_HOME\bin\java.exe" -version

      # ------------------------------------------------------------
      # Google Services
      # ------------------------------------------------------------
      - name: Restore google-services.json from Secret
        env:
          GOOGLE_SERVICES_JSON: ${{ secrets.GOOGLE_SERVICES_JSON }}
        if: ${{ env.GOOGLE_SERVICES_JSON != '' }}
        working-directory: frontend/android/app
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          Set-Content `
            -Path "google-services.json" `
            -Value $env:GOOGLE_SERVICES_JSON `
            -Encoding utf8

          Write-Host "google-services.json restored."

      # ------------------------------------------------------------
      # Determine Release Tag & Version
      # ------------------------------------------------------------
      - name: Determine Release Tag & Version
        id: release_info
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          $inputTag = '${{ github.event.inputs.tag_name }}'.Trim()
          $runNumber = '${{ github.run_number }}'

          $versionLine = Get-Content frontend/pubspec.yaml |
            Select-String '^version:' |
            Select-Object -First 1

          if (-not $versionLine) {
            throw "Could not find version: in frontend/pubspec.yaml"
          }

          $rawVer = ($versionLine.Line -split ':', 2)[1].Trim()
          $verParts = $rawVer.Split('+')
          $semVer = $verParts[0]

          $semParts = $semVer.Split('.')
          $major = if ($semParts.Length -ge 1) { $semParts[0] } else { "1" }
          $minor = if ($semParts.Length -ge 2) { $semParts[1] } else { "0" }

          $isTagPush = '${{ github.event_name }}' -eq 'push' -and '${{ github.ref }}'.StartsWith('refs/tags/')

          if ($isTagPush) {
            $refTag = '${{ github.ref_name }}'
            $tag = if ($refTag.StartsWith('v')) { $refTag } else { "v$refTag" }
            $verName = $tag.TrimStart('v')
          }
          elseif ($inputTag) {
            $tag = if ($inputTag.StartsWith('v')) { $inputTag } else { "v$inputTag" }
            $verName = $tag.TrimStart('v')
          }
          else {
            # Auto-increment patch using GitHub Actions run_number
            $verName = "$major.$minor.$runNumber"
            $tag = "v$verName"
          }

          $buildNumber = $runNumber

          if ($tag -notmatch '^v\d+\.\d+\.\d+(?:[-+][0-9A-Za-z.-]+)?$') {
            throw "Invalid release tag '$tag'. Expected format like v1.0.0."
          }

          Write-Host "Release tag  : $tag"
          Write-Host "Version name : $verName"
          Write-Host "Build number : $buildNumber"

          "tag=$tag" |
            Out-File `
              -FilePath $env:GITHUB_OUTPUT `
              -Encoding utf8 `
              -Append

          "version_name=$verName" |
            Out-File `
              -FilePath $env:GITHUB_OUTPUT `
              -Encoding utf8 `
              -Append

          "build_number=$buildNumber" |
            Out-File `
              -FilePath $env:GITHUB_OUTPUT `
              -Encoding utf8 `
              -Append

          # Sync calculated version and build number into pubspec.yaml
          $pubspecPath = "frontend/pubspec.yaml"
          $pubContent = Get-Content $pubspecPath
          $updatedPub = $pubContent -replace '^version:.*', "version: $verName+$buildNumber"
          Set-Content -Path $pubspecPath -Value $updatedPub -Encoding utf8
          Write-Host "Updated $pubspecPath to version: $verName+$buildNumber"

      # ------------------------------------------------------------
      # Manual Release Tag
      # ------------------------------------------------------------
      - name: Create Git Tag for Manual Release
        if: ${{ github.event_name == 'workflow_dispatch' }}
        shell: pwsh
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          RELEASE_TAG: ${{ steps.release_info.outputs.tag }}
        run: |
          $ErrorActionPreference = 'Stop'

          Write-Host "Checking whether tag $env:RELEASE_TAG exists..."

          gh api `
            "repos/${{ github.repository }}/git/ref/tags/$env:RELEASE_TAG" `
            --silent 2>$null

          if ($LASTEXITCODE -eq 0) {
            Write-Host "Tag $env:RELEASE_TAG already exists."
          }
          else {
            Write-Host "Creating tag $env:RELEASE_TAG..."

            gh api `
              --method POST `
              "repos/${{ github.repository }}/git/refs" `
              -f "ref=refs/tags/$env:RELEASE_TAG" `
              -f "sha=${{ github.sha }}"

            if ($LASTEXITCODE -ne 0) {
              throw "Failed to create tag $env:RELEASE_TAG"
            }

            Write-Host "Tag $env:RELEASE_TAG created successfully."
          }

      # ------------------------------------------------------------
      # Windows Build
      # ------------------------------------------------------------
      - name: Build Windows Desktop App
        working-directory: frontend
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          flutter pub get

          if ($LASTEXITCODE -ne 0) {
            throw "flutter pub get failed."
          }

          flutter build windows `
            --release `
            --obfuscate `
            --split-debug-info=build/windows/symbols `
            --build-name="${{ steps.release_info.outputs.version_name }}" `
            --build-number="${{ steps.release_info.outputs.build_number }}"

          if ($LASTEXITCODE -ne 0) {
            throw "Flutter Windows build failed."
          }

      # ------------------------------------------------------------
      # Windows Installer
      # ------------------------------------------------------------
      - name: Compile Inno Setup Windows Installer
        working-directory: frontend
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          New-Item `
            -ItemType Directory `
            -Force `
            -Path ..\installers |
            Out-Null

          & "C:\Program Files (x86)\Inno Setup 6\ISCC.exe" `
            "/DMyAppVersion=${{ steps.release_info.outputs.version_name }}" `
            TIS_RMS_Client.iss

          if ($LASTEXITCODE -ne 0) {
            throw "Inno Setup compilation failed."
          }

      # ------------------------------------------------------------
      # Android Build
      # ------------------------------------------------------------
      - name: Build Android Universal APK
        working-directory: frontend
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          Write-Host "Using JAVA_HOME:"
          Write-Host $env:JAVA_HOME

          & "$env:JAVA_HOME\bin\java.exe" -version

          Write-Host ""
          Write-Host "Building Android APK..."

          flutter build apk `
            --release `
            --obfuscate `
            --split-debug-info=build/app/outputs/symbols `
            --build-name="${{ steps.release_info.outputs.version_name }}" `
            --build-number="${{ steps.release_info.outputs.build_number }}"

          if ($LASTEXITCODE -ne 0) {
            throw "Flutter Android APK build failed."
          }

          $apkPath = "build\app\outputs\flutter-apk\app-release.apk"
          $outputPath = "..\installers\TIS_RMS_Android_Universal.apk"

          if (-not (Test-Path $apkPath)) {
            throw "Android build completed without producing $apkPath"
          }

          Copy-Item `
            $apkPath `
            $outputPath `
            -Force

          Write-Host "Android APK copied to $outputPath"

      # ------------------------------------------------------------
      # Verify Artifacts
      # ------------------------------------------------------------
      - name: Verify Release Artifacts
        shell: pwsh
        run: |
          $ErrorActionPreference = 'Stop'

          $files = @(
            "installers\TIS_RMS_Client_Setup.exe",
            "installers\TIS_RMS_Android_Universal.apk"
          )

          foreach ($file in $files) {
            if (-not (Test-Path $file)) {
              throw "Missing release artifact: $file"
            }

            $size = (Get-Item $file).Length

            if ($size -le 0) {
              throw "Release artifact is empty: $file"
            }

            Write-Host "Found: $file"
            Write-Host "Size: $size bytes"
          }

      # ------------------------------------------------------------
      # GitHub Release
      # ------------------------------------------------------------
      - name: Create GitHub Release and Upload Artifacts
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.release_info.outputs.tag }}
          target_commitish: ${{ github.sha }}
          name: Release ${{ steps.release_info.outputs.tag }}
          files: |
            installers/TIS_RMS_Client_Setup.exe
            installers/TIS_RMS_Android_Universal.apk
          generate_release_notes: true
          draft: false
          prerelease: false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}