name: Playwright Tests

on:
  push:
    branches:
      - main
      - bt
  pull_request:
    types:
      - opened
      - synchronize
  workflow_dispatch:

jobs:
  test-playwright:
    timeout-minutes: 60
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        run: |
          set -euo pipefail
          git clone "http://172.17.0.1:3000/${{ github.repository }}.git" .
          git checkout "${{ github.sha }}"

      - name: Detect relevant file changes
        id: changes
        run: |
          set -euo pipefail
          CHANGED=false

          if [ "${{ github.event_name }}" = "pull_request" ]; then
            BASE="${{ github.base_ref }}"
            git fetch origin "+refs/heads/${BASE}:refs/remotes/origin/${BASE}" --depth=200 2>/dev/null \
              || git fetch origin --depth=200
            if git rev-parse "origin/${BASE}" >/dev/null 2>&1; then
              FILES=$(git diff --name-only "origin/${BASE}...HEAD" || true)
            else
              FILES=$(git show --name-only --pretty=format: HEAD)
            fi
          else
            BEFORE="${{ github.event.before }}"
            if [ -z "${BEFORE}" ] || [ "${BEFORE}" = "0000000000000000000000000000000000000000" ]; then
              FILES=$(git show --name-only --pretty=format: HEAD)
            else
              FILES=$(git diff --name-only "${BEFORE}" "${{ github.sha }}" || true)
            fi
          fi

          while IFS= read -r line; do
            [ -z "${line}" ] && continue
            case "${line}" in
              backend/*|frontend/*|.env|compose*|.gitea/workflows/playwright.yml|.github/workflows/playwright.yml)
                CHANGED=true
                break
                ;;
            esac
          done <<< "${FILES}"

          echo "changed=${CHANGED}" >> "${GITHUB_OUTPUT}"
          echo "Relevant changes for Playwright: ${CHANGED}"

      - name: Skip Playwright (no relevant changes)
        if: steps.changes.outputs.changed != 'true'
        run: echo "Skipping Playwright — no changes under backend/, frontend/, compose, .env, or playwright workflows."

      - name: Install uv and Bun
        if: steps.changes.outputs.changed == 'true'
        run: |
          set -euo pipefail
          export PATH="${HOME}/.local/bin:${HOME}/.bun/bin:${PATH}"
          export UV_PYTHON_DOWNLOADS=automatic

          sudo apt-get update -qq
          sudo apt-get install -y python3 python3-pip python3-venv curl unzip ca-certificates

          python3 -m pip install --user --upgrade pip
          python3 -m pip install --user "uv>=0.4"

          # Official Bun installer (not GitHub Actions)
          curl -fsSL https://bun.sh/install | bash

      - name: Generate client, build images, run Playwright
        if: steps.changes.outputs.changed == 'true'
        run: |
          set -euo pipefail
          export PATH="${HOME}/.local/bin:${HOME}/.bun/bin:${PATH}"
          export BUN_INSTALL="${HOME}/.bun"

          (cd backend && uv sync)
          bun ci
          bash scripts/generate-client.sh

          docker compose build
          docker compose down -v --remove-orphans || true
          docker compose run --rm playwright bunx playwright test \
            --fail-on-flaky-tests \
            --trace=retain-on-failure
          docker compose down -v --remove-orphans || true