# Interoperability Tests
#
# This workflow ensures Kubo remains compatible with the broader IPFS ecosystem.
# It builds Kubo from source, then runs:
#
# 1. helia-interop: Tests compatibility with Helia (JavaScript IPFS implementation)
#    using Playwright-based tests from @helia/interop package.
#
# 2. ipfs-webui: Runs E2E tests from ipfs/ipfs-webui repository to verify
#    the web interface works correctly with the locally built Kubo binary.
#
# Both jobs use caching to speed up repeated runs (npm dependencies, Playwright
# browsers, and webui build artifacts).

name: Interop

on:
  workflow_dispatch:
  pull_request:
    paths-ignore:
      - '**/*.md'
  push:
    branches:
      - 'master'

concurrency:
  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.event_name == 'push' && github.sha || github.ref }}
  cancel-in-progress: true

defaults:
  run:
    shell: bash

jobs:
  interop-prep:
    if: github.repository == 'ipfs/kubo' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    timeout-minutes: 5
    env:
      TEST_DOCKER: 0
      TEST_FUSE: 0
      TEST_VERBOSE: 1
      GIT_PAGER: cat
      IPFS_CHECK_RCMGR_DEFAULTS: 1
    defaults:
      run:
        shell: bash
    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-go@v6
        with:
          go-version-file: 'go.mod'
      - run: make build
      - uses: actions/upload-artifact@v6
        with:
          name: kubo
          path: cmd/ipfs/ipfs
  helia-interop:
    needs: [interop-prep]
    runs-on: ${{ fromJSON(github.repository == 'ipfs/kubo' && '["self-hosted", "linux", "x64", "2xlarge"]' || '"ubuntu-latest"') }}
    timeout-minutes: 20
    defaults:
      run:
        shell: bash
    steps:
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
      - uses: actions/download-artifact@v7
        with:
          name: kubo
          path: cmd/ipfs
      - run: chmod +x cmd/ipfs/ipfs
      - run: sudo apt update
      - run: sudo apt install -y libxkbcommon0 libxdamage1 libgbm1 libpango-1.0-0 libcairo2 # dependencies for playwright
      # Cache node_modules based on latest @helia/interop version from npm registry.
      # This ensures we always test against the latest release while still benefiting
      # from caching when the version hasn't changed.
      - name: Get latest @helia/interop version
        id: helia-version
        run: echo "version=$(npm view @helia/interop version)" >> $GITHUB_OUTPUT
      - name: Cache helia-interop node_modules
        uses: actions/cache@v5
        id: helia-cache
        with:
          path: node_modules
          key: ${{ runner.os }}-helia-interop-${{ steps.helia-version.outputs.version }}
      - name: Install @helia/interop
        if: steps.helia-cache.outputs.cache-hit != 'true'
        run: npm install @helia/interop
      # TODO(IPIP-499): Remove --grep --invert workaround once helia implements IPIP-499
      # Tracking issue: https://github.com/ipfs/helia/issues/941
      #
      # PROVISIONAL HACK: Skip '@helia/mfs - should have the same CID after
      # creating a file' test due to IPIP-499 changes in kubo.
      #
      # WHY IT FAILS: The test creates a 5-byte file in MFS on both kubo and helia,
      # then compares the root directory CID. With kubo PR #11148, `ipfs files write`
      # now produces raw CIDs for single-block files (matching `ipfs add --raw-leaves`),
      # while helia uses `reduceSingleLeafToSelf: false` which keeps the dag-pb wrapper.
      # Different file CIDs lead to different directory CIDs.
      #
      # We run aegir directly (instead of helia-interop binary) because only aegir
      # supports the --grep/--invert flags needed to exclude specific tests.
      - name: Run helia-interop tests (excluding IPIP-499 incompatible test)
        run: npx aegir test -t node --bail -- --grep 'should have the same CID after creating a file' --invert
        env:
          KUBO_BINARY: ${{ github.workspace }}/cmd/ipfs/ipfs
        working-directory: node_modules/@helia/interop
  ipfs-webui:
    needs: [interop-prep]
    runs-on: ${{ fromJSON(github.repository == 'ipfs/kubo' && '["self-hosted", "linux", "x64", "2xlarge"]' || '"ubuntu-latest"') }}
    timeout-minutes: 20
    env:
      NO_SANDBOX: true
      LIBP2P_TCP_REUSEPORT: false
      LIBP2P_ALLOW_WEAK_RSA_KEYS: 1
      E2E_IPFSD_TYPE: go
      GIT_PAGER: cat
      IPFS_CHECK_RCMGR_DEFAULTS: 1
    defaults:
      run:
        shell: bash
    steps:
      - uses: actions/download-artifact@v7
        with:
          name: kubo
          path: cmd/ipfs
      - run: chmod +x cmd/ipfs/ipfs
      - uses: actions/checkout@v6
        with:
          repository: ipfs/ipfs-webui
          path: ipfs-webui
      - uses: actions/setup-node@v6
        with:
          node-version-file: 'ipfs-webui/.tool-versions'
      - id: webui-ref
        run: echo "ref=$(git rev-parse --short HEAD)" | tee -a $GITHUB_OUTPUT
        working-directory: ipfs-webui
      - id: webui-state
        env:
          GITHUB_TOKEN: ${{ github.token }}
          ENDPOINT: repos/ipfs/ipfs-webui/commits/${{ steps.webui-ref.outputs.ref }}/status
          SELECTOR: .state
          KEY: state
        run: gh api "$ENDPOINT" --jq "$SELECTOR" | xargs -I{} echo "$KEY={}" | tee -a $GITHUB_OUTPUT
      # Cache node_modules based on package-lock.json
      - name: Cache node_modules
        uses: actions/cache@v5
        id: node-modules-cache
        with:
          path: ipfs-webui/node_modules
          key: ${{ runner.os }}-webui-node-modules-${{ hashFiles('ipfs-webui/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-webui-node-modules-
      - name: Install dependencies
        if: steps.node-modules-cache.outputs.cache-hit != 'true'
        run: npm ci --prefer-offline --no-audit --progress=false
        working-directory: ipfs-webui
      # Cache Playwright browsers
      - name: Cache Playwright browsers
        uses: actions/cache@v5
        id: playwright-cache
        with:
          path: ~/.cache/ms-playwright
          key: ${{ runner.os }}-playwright-${{ hashFiles('ipfs-webui/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-playwright-
      # On cache miss: download browsers and install OS dependencies
      - name: Install Playwright with dependencies
        if: steps.playwright-cache.outputs.cache-hit != 'true'
        run: npx playwright install --with-deps
        working-directory: ipfs-webui
      # On cache hit: only ensure OS dependencies are present (fast, idempotent)
      - name: Install Playwright OS dependencies
        if: steps.playwright-cache.outputs.cache-hit == 'true'
        run: npx playwright install-deps
        working-directory: ipfs-webui
      # Cache test build output
      - name: Cache test build
        uses: actions/cache@v5
        id: test-build-cache
        with:
          path: ipfs-webui/build
          key: ${{ runner.os }}-webui-build-${{ hashFiles('ipfs-webui/package-lock.json', 'ipfs-webui/src/**', 'ipfs-webui/public/**') }}
          restore-keys: |
            ${{ runner.os }}-webui-build-
      - name: Build ipfs-webui@${{ steps.webui-ref.outputs.ref }} (state=${{ steps.webui-state.outputs.state }})
        if: steps.test-build-cache.outputs.cache-hit != 'true'
        run: npm run test:build
        working-directory: ipfs-webui
      - name: Test ipfs-webui@${{ steps.webui-ref.outputs.ref }} (state=${{ steps.webui-state.outputs.state }}) E2E against the locally built Kubo binary
        run: npm run test:e2e
        env:
          IPFS_GO_EXEC: ${{ github.workspace }}/cmd/ipfs/ipfs
        working-directory: ipfs-webui
      - name: Upload test artifacts on failure
        if: failure()
        uses: actions/upload-artifact@v6
        with:
          name: webui-test-results
          path: ipfs-webui/test-results/
          retention-days: 7