name: Mobile CI

on:
  pull_request:
    paths:
      - 'apps/mobile/**'
      - '.github/workflows/mobile-ci.yml'
  push:
    branches:
      - main
    paths:
      - 'apps/mobile/**'
      - '.github/workflows/mobile-ci.yml'

jobs:
  detect-changes:
    name: 🔍 Detect Mobile Changes
    runs-on: ubuntu-latest
    outputs:
      mobile-changed: ${{ steps.detect.outputs.mobile-changed }}
      changed-files: ${{ steps.detect.outputs.changed-files }}
    steps:
      - name: 📥 Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: 🔎 Detect changes in apps/mobile
        id: detect
        run: |
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
            # For PR, compare all changes against base branch (not just latest commit)
            # Using three-dot syntax (...) shows all files changed in the PR branch
            BASE_REF="${{ github.event.pull_request.base.ref }}"
            CHANGED_FILES=$(git diff --name-only origin/$BASE_REF...HEAD 2>/dev/null || echo "")
          else
            # For push, compare with previous commit
            if [[ "${{ github.event.before }}" == "0000000000000000000000000000000000000000" ]]; then
              # Initial commit, check all files
              CHANGED_FILES=$(git ls-tree -r --name-only HEAD)
            else
              CHANGED_FILES=$(git diff --name-only ${{ github.event.before }} ${{ github.event.after }})
            fi
          fi

          # Filter for files in apps/mobile
          MOBILE_CHANGED=$(echo "$CHANGED_FILES" | grep -c "^apps/mobile/" || echo "0")
          
          if [[ $MOBILE_CHANGED -gt 0 ]]; then
            echo "mobile-changed=true" >> $GITHUB_OUTPUT
            # Get list of changed Dart files in apps/mobile
            MOBILE_FILES=$(echo "$CHANGED_FILES" | grep "^apps/mobile/" | grep "\.dart$" || echo "")
            echo "changed-files<<EOF" >> $GITHUB_OUTPUT
            echo "$MOBILE_FILES" >> $GITHUB_OUTPUT
            echo "EOF" >> $GITHUB_OUTPUT
            echo "✅ Changes detected in apps/mobile/"
            echo "📝 Changed files:"
            echo "$MOBILE_FILES"
          else
            echo "mobile-changed=false" >> $GITHUB_OUTPUT
            echo "changed-files=" >> $GITHUB_OUTPUT
            echo "⏭️  No changes detected in apps/mobile/ - skipping checks"
          fi

  compile:
    name: 🏗️ Compile Mobile App
    runs-on: macos-latest
    needs: detect-changes
    if: needs.detect-changes.outputs.mobile-changed == 'true'
    steps:
      - name: 📥 Checkout repository
        uses: actions/checkout@v4

      - name: 🦋 Set up Flutter
        uses: subosito/flutter-action@v2
        with:
          flutter-version: '3.38.x'
          channel: 'stable'
          cache: true

      - name: 🔧 Install Firebase CLI
        run: |
          npm install -g firebase-tools

      - name: 📦 Get Flutter dependencies
        run: |
          make mobile-install

      - name: 🔨 Run compilation check
        run: |
          set -o pipefail

          echo "🏗️ Building client app for Android (dev mode)..."
          if ! make mobile-client-build PLATFORM=apk MODE=debug 2>&1 | tee client_build.txt; then
            echo ""
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
            echo "❌ CLIENT APP BUILD FAILED"
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
            exit 1
          fi
          
          echo ""
          echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
          
          echo "🏗️ Building staff app for Android (dev mode)..."
          if ! make mobile-staff-build PLATFORM=apk MODE=debug 2>&1 | tee staff_build.txt; then
            echo ""
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
            echo "❌ STAFF APP BUILD FAILED"
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
            exit 1
          fi
          
          echo ""
          echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
          echo "✅ Build check PASSED - Both apps built successfully"
          echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"

  lint:
    name: 🧹 Lint Changed Files
    runs-on: macos-latest
    needs: detect-changes
    if: needs.detect-changes.outputs.mobile-changed == 'true' && needs.detect-changes.outputs.changed-files != ''
    steps:
      - name: 📥 Checkout repository
        uses: actions/checkout@v4

      - name: 🦋 Set up Flutter
        uses: subosito/flutter-action@v2
        with:
          flutter-version: '3.38.x'
          channel: 'stable'
          cache: true

      - name: 🔧 Install Firebase CLI
        run: |
          npm install -g firebase-tools

      - name: 📦 Get Flutter dependencies
        run: |
          make mobile-install

      - name: 🔍 Lint changed Dart files
        run: |
          set -o pipefail
          
          # Get the list of changed files
          CHANGED_FILES="${{ needs.detect-changes.outputs.changed-files }}"
          
          if [[ -z "$CHANGED_FILES" ]]; then
            echo "⏭️  No Dart files changed, skipping lint"
            exit 0
          fi
          
          echo "🎯 Running lint on changed files:"
          echo "$CHANGED_FILES"
          echo ""
          
          # Run dart analyze on each changed file
          HAS_ERRORS=false
          FAILED_FILES=()
          
          while IFS= read -r file; do
            if [[ -n "$file" && "$file" == *.dart && -f "$file" ]]; then
              echo "📝 Analyzing: $file"
              
              if ! dart analyze "$file" 2>&1 | tee -a lint_output.txt; then
                HAS_ERRORS=true
                FAILED_FILES+=("$file")
              fi
              echo ""
            fi
          done <<< "$CHANGED_FILES"
          
          echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
          
          # Check if there were any errors
          if [[ "$HAS_ERRORS" == "true" ]]; then
            echo "❌ LINT ERRORS FOUND IN ${#FAILED_FILES[@]} FILE(S):"
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
            for file in "${FAILED_FILES[@]}"; do
              echo "  ❌ $file"
            done
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
            echo ""
            echo "See details above for each file"
            exit 1
          else
            echo "✅ Lint check PASSED for all changed files"
            echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
          fi

  status-check:
    name: 📊 CI Status Check
    runs-on: ubuntu-latest
    needs: [detect-changes, compile, lint]
    if: always()
    steps:
      - name: 🔍 Check mobile changes detected
        run: |
          if [[ "${{ needs.detect-changes.outputs.mobile-changed }}" == "true" ]]; then
            echo "✅ Mobile changes detected - running full checks"
          else
            echo "⏭️  No mobile changes detected - skipping checks"
          fi

      - name: 🏗️ Report compilation status
        if: needs.detect-changes.outputs.mobile-changed == 'true'
        run: |
          if [[ "${{ needs.compile.result }}" == "success" ]]; then
            echo "✅ Compilation check: PASSED"
          else
            echo "❌ Compilation check: FAILED"
            exit 1
          fi

      - name: 🧹 Report lint status
        if: needs.detect-changes.outputs.mobile-changed == 'true' && needs.detect-changes.outputs.changed-files != ''
        run: |
          if [[ "${{ needs.lint.result }}" == "success" ]]; then
            echo "✅ Lint check: PASSED"
          else
            echo "❌ Lint check: FAILED"
            exit 1
          fi

      - name: 🎉 Final status
        if: always()
        run: |
          echo ""
          echo "╔════════════════════════════════════╗"
          echo "║  📊 Mobile CI Pipeline Summary     ║"
          echo "╚════════════════════════════════════╝"
          echo ""
          echo "🔍 Change Detection: ${{ needs.detect-changes.result }}"
          echo "🏗️ Compilation:      ${{ needs.compile.result }}"
          echo "🧹 Lint Check:       ${{ needs.lint.result }}"
          echo ""
          
          if [[ "${{ needs.detect-changes.result }}" != "success" || \
                ("${{ needs.detect-changes.outputs.mobile-changed }}" == "true" && \
                 ("${{ needs.compile.result }}" != "success" || "${{ needs.lint.result }}" != "success")) ]]; then
            echo "❌ Pipeline FAILED"
            exit 1
          else
            echo "✅ Pipeline PASSED"
          fi