name: Run tests on Depot

on:
  workflow_dispatch:
    inputs:
      ref:
        description: Branch or SHA to test
        required: false
        default: ""
      skip_unit_tests:
        description: Skip unit tests (run only UI tests)
        required: false
        default: false
        type: boolean
      skip_ui_tests:
        description: Skip UI tests (run only unit tests)
        required: false
        default: false
        type: boolean
      test_filter:
        description: "Run specific UI test class (e.g. UpdatePillUITests) or empty for all"
        required: false
        default: ""
      test_timeout:
        description: "Per-test timeout in seconds (default: 120)"
        required: false
        default: "120"

jobs:
  tests:
    runs-on: depot-macos-latest
    steps:
      - name: Checkout
        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
        with:
          ref: ${{ github.event.inputs.ref || github.ref }}
          submodules: recursive

      - name: Select Xcode
        run: |
          set -euo pipefail
          if [ -d "/Applications/Xcode.app/Contents/Developer" ]; then
            XCODE_DIR="/Applications/Xcode.app/Contents/Developer"
          else
            XCODE_APP="$(ls -d /Applications/Xcode*.app 2>/dev/null | head -n 1 || true)"
            if [ -n "$XCODE_APP" ]; then
              XCODE_DIR="$XCODE_APP/Contents/Developer"
            else
              echo "No Xcode.app found under /Applications" >&2
              exit 1
            fi
          fi
          echo "DEVELOPER_DIR=$XCODE_DIR" >> "$GITHUB_ENV"
          export DEVELOPER_DIR="$XCODE_DIR"
          xcodebuild -version
          xcrun --sdk macosx --show-sdk-path

      - name: Download pre-built GhosttyKit.xcframework
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          GHOSTTY_SHA=$(git -C ghostty rev-parse HEAD)
          TAG="xcframework-$GHOSTTY_SHA"
          URL="https://github.com/manaflow-ai/ghostty/releases/download/$TAG/GhosttyKit.xcframework.tar.gz"
          echo "Downloading xcframework for ghostty $GHOSTTY_SHA"
          MAX_RETRIES=30
          RETRY_DELAY=20
          for i in $(seq 1 $MAX_RETRIES); do
            if curl -fSL -o GhosttyKit.xcframework.tar.gz "$URL"; then
              echo "Download succeeded on attempt $i"
              break
            fi
            if [ "$i" -eq "$MAX_RETRIES" ]; then
              echo "Failed to download xcframework after $MAX_RETRIES attempts" >&2
              exit 1
            fi
            echo "Attempt $i/$MAX_RETRIES failed, retrying in ${RETRY_DELAY}s..."
            sleep $RETRY_DELAY
          done
          tar xzf GhosttyKit.xcframework.tar.gz
          rm GhosttyKit.xcframework.tar.gz
          test -d GhosttyKit.xcframework

      - name: Install zig
        run: |
          if ! command -v zig >/dev/null 2>&1; then
            brew install zig
          fi

      - name: Create virtual display
        run: |
          set -euo pipefail
          echo "=== Display before ==="
          system_profiler SPDisplaysDataType 2>/dev/null || echo "(none)"
          echo ""
          clang -framework Foundation -framework CoreGraphics \
            -o /tmp/create-virtual-display scripts/create-virtual-display.m
          /tmp/create-virtual-display &
          VDISPLAY_PID=$!
          echo "VDISPLAY_PID=$VDISPLAY_PID" >> "$GITHUB_ENV"
          sleep 3
          echo "=== Display after ==="
          system_profiler SPDisplaysDataType 2>/dev/null || echo "(none)"

      - name: Clean DerivedData
        run: |
          rm -rf ~/Library/Developer/Xcode/DerivedData/GhosttyTabs-*

      - name: Resolve Swift packages
        run: |
          set -euo pipefail
          SOURCE_PACKAGES_DIR="$PWD/.ci-source-packages"
          rm -rf "$SOURCE_PACKAGES_DIR"
          mkdir -p "$SOURCE_PACKAGES_DIR"

          for attempt in 1 2 3; do
            if xcodebuild -project GhosttyTabs.xcodeproj -scheme cmux-unit -configuration Debug \
              -clonedSourcePackagesDirPath "$SOURCE_PACKAGES_DIR" \
              -resolvePackageDependencies; then
              exit 0
            fi
            if [ "$attempt" -eq 3 ]; then
              echo "Failed to resolve Swift packages after 3 attempts" >&2
              exit 1
            fi
            echo "Package resolution failed on attempt $attempt, retrying..."
            sleep $((attempt * 5))
          done

      - name: Run unit tests
        if: ${{ !inputs.skip_unit_tests }}
        run: |
          set -euo pipefail
          SOURCE_PACKAGES_DIR="$PWD/.ci-source-packages"
          run_unit_tests() {
            xcodebuild -project GhosttyTabs.xcodeproj -scheme cmux-unit -configuration Debug \
              -clonedSourcePackagesDirPath "$SOURCE_PACKAGES_DIR" \
              -disableAutomaticPackageResolution \
              -destination "platform=macOS" test 2>&1
          }

          set +e
          OUTPUT=$(run_unit_tests)
          EXIT_CODE=$?
          set -e

          # SwiftPM binary artifact resolution can occasionally fail with
          # "Could not resolve package dependencies". Retry once after clearing
          # SwiftPM/DerivedData caches to recover from transient corruption.
          if [ "$EXIT_CODE" -ne 0 ] && echo "$OUTPUT" | grep -q "Could not resolve package dependencies"; then
            echo "SwiftPM package resolution failed, clearing caches and retrying once"
            rm -rf ~/Library/Caches/org.swift.swiftpm
            rm -rf ~/Library/Developer/Xcode/DerivedData/GhosttyTabs-*
            set +e
            OUTPUT=$(run_unit_tests)
            EXIT_CODE=$?
            set -e
          fi

          echo "$OUTPUT"
          if [ "$EXIT_CODE" -ne 0 ]; then
            SUMMARY=$(echo "$OUTPUT" | grep "Executed.*tests.*with.*failures" | tail -1)
            if echo "$SUMMARY" | grep -q "(0 unexpected)"; then
              echo "All failures are expected, treating as pass"
            else
              echo "Unexpected test failures detected"
              exit 1
            fi
          fi

      - name: Run UI tests
        if: ${{ !inputs.skip_ui_tests }}
        env:
          TEST_FILTER: ${{ inputs.test_filter }}
          TEST_TIMEOUT: ${{ inputs.test_timeout || '120' }}
        run: |
          set -euo pipefail
          SOURCE_PACKAGES_DIR="$PWD/.ci-source-packages"

          # Build the -only-testing argument
          if [ -n "$TEST_FILTER" ]; then
            ONLY_TESTING="-only-testing:cmuxUITests/$TEST_FILTER"
          else
            ONLY_TESTING="-only-testing:cmuxUITests"
          fi

          xcodebuild -project GhosttyTabs.xcodeproj -scheme cmux -configuration Debug \
            -clonedSourcePackagesDirPath "$SOURCE_PACKAGES_DIR" \
            -disableAutomaticPackageResolution \
            -destination "platform=macOS" \
            -maximum-test-execution-time-allowance "$TEST_TIMEOUT" \
            $ONLY_TESTING test