name: goose Issue Solver

on:
  issue_comment:
    types: [created]
  workflow_dispatch:
    inputs:
      issue_number:
        description: 'Issue number to solve'
        required: true
        type: string

env:
  GOOSE_RECIPE: |
    version: "1.0.0"
    title: "Solve GitHub Issue"
    description: "Solve GitHub issue #${ISSUE_NUMBER}"

    extensions:
      - type: builtin
        name: developer
      - type: platform
        name: todo

    instructions: |
      Write code like a senior goose contributor.

      Principles:
      - Search first: `rg "keyword" -l` to find existing patterns. Copy them exactly.
      - Deletion is a feature: ask "can I delete code instead of adding?"
      - Complete changes: update ALL usages when changing a type. No exceptions.
      - When changing message types, update ALL provider format functions.
      - When changing server routes, run `just generate-openapi`.
      - Your context degrades. The TODO is your memory. Update it after each step.

      Types:
      - `PathBuf` for paths, never `String`
      - Enums for finite sets, never string comparisons
      - `Vec<T>` not `Option<Vec<T>>` - empty vec is the "none" case
      - Don't return `Result` if failure is meaningless
      - `#[serde(default)]` on new struct fields

      Patterns:
      - Early returns, not nested if-else
      - Extract to utility if code appears 3+ times
      - Scope locks tightly: extract data, release lock, then I/O
      - Log and continue for non-critical failures
      - Error messages must say HOW to fix, not just what's wrong
      - Use `#[cfg(target_os = "...")]` for platform-specific code

      Testing:
      - Bug fix: write failing test FIRST, then fix
      - Delete tests when deleting features
      - No tests for trivial code

      Don't:
      - Create abstractions unless required
      - Add backward compat shims - update callers
      - Write WHAT comments (keep WHY comments)
      - Add checks the OS will do anyway

    prompt: |
      Solve GitHub issue #${ISSUE_NUMBER}: ${ISSUE_TITLE}

      The issue is saved at /tmp/issue.json

      Trigger comment:
      ${TRIGGER_COMMENT}

      Write this to your TODO immediately and update as you progress:

      ## Phase 1: Understand
      - [ ] Read /tmp/issue.json
      - [ ] Write all requirements (explicit + implicit) to /tmp/requirements.md
      - [ ] Read AGENTS.md if it exists

      ## Phase 2: Research
      - [ ] `rg "keyword" -l` to find relevant files and similar patterns
      - [ ] `analyze path="crates/" focus="SymbolName"` to trace type/function usage
      - [ ] Read 2-3 similar implementations to copy their patterns
      - [ ] List all files that need changes in TODO

      ## Phase 3: Plan
      - [ ] Decide on implementation approach
      - [ ] If changing >5 files or public APIs, write plan to /tmp/plan.md first
      - [ ] Update TODO with specific changes to make

      ## Phase 4: Implement
      - [ ] Implement minimal fix per /tmp/requirements.md
      - [ ] Before adding anything, check: is it in the requirements? If not, don't.
      - [ ] No .github/, no lock files, no secrets

      ## Phase 5: Verify
      - [ ] source bin/activate-hermit
      - [ ] cargo check
      - [ ] cargo test (affected crates)
      - [ ] cargo fmt
      - [ ] cargo clippy --all-targets -- -D warnings
      - [ ] Fix failures, retry up to 3 times

      ## Phase 6: Confirm (MANDATORY)
      - [ ] Reread /tmp/issue.json
      - [ ] Reread /tmp/requirements.md
      - [ ] Confirm all requirements met, nothing extra added
      - [ ] Write a summary of changes to /tmp/issue_summary.txt

      The Phase 6 "Reread" steps MUST appear in your updated TODO. Skipping them is failure.

      Only write /tmp/issue_summary.txt if the fix is complete and verified.
      Run `git add` for any new files required for the fix.
      Do NOT commit. Leave changes in the working directory for the workflow to handle.

permissions:
  contents: write
  pull-requests: write
  issues: write

concurrency:
  group: goose-issue-${{ github.event.issue.number || github.event.inputs.issue_number }}
  cancel-in-progress: false

jobs:
  solve-issue:
    if: |
      github.event_name == 'workflow_dispatch' ||
      (!github.event.issue.pull_request &&
       startsWith(github.event.comment.body, '/goose') &&
       contains(fromJSON('["OWNER", "MEMBER", "COLLABORATOR"]'), github.event.comment.author_association))

    runs-on: ubuntu-latest
    timeout-minutes: 30

    container:
      image: ghcr.io/block/goose:latest
      options: --user root
      env:
        GOOSE_PROVIDER: ${{ vars.GOOSE_PROVIDER || 'anthropic' }}
        GOOSE_MODEL: ${{ vars.GOOSE_MODEL || 'claude-opus-4-5' }}
        ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
        HOME: /tmp/goose-home

    steps:
      - name: Acknowledge trigger
        if: github.event_name == 'issue_comment'
        run: |
          curl -sL -X POST \
            -H "Accept: application/vnd.github+json" \
            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
            "https://api.github.com/repos/${{ github.repository }}/issues/comments/${{ github.event.comment.id }}/reactions" \
            -d '{"content":"eyes"}'

      - name: Checkout
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8  # v6.0.1
        with:
          ref: main
          fetch-depth: 1

      - name: Install tools
        run: |
          apt-get update
          apt-get install -y jq gettext curl build-essential pkg-config libssl-dev
          curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg
          echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | tee /etc/apt/sources.list.d/github-cli.list > /dev/null
          apt-get update
          apt-get install -y gh

      - name: Get issue details (issue_comment)
        if: github.event_name == 'issue_comment'
        env:
          ISSUE_JSON: ${{ toJSON(github.event.issue) }}
        run: printenv ISSUE_JSON > /tmp/issue.json

      - name: Get issue details (workflow_dispatch)
        if: github.event_name == 'workflow_dispatch'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: gh api /repos/${{ github.repository }}/issues/${{ github.event.inputs.issue_number }} > /tmp/issue.json

      - name: Set issue outputs
        id: issue
        run: |
          echo "number=$(jq -r '.number' /tmp/issue.json)" >> $GITHUB_OUTPUT

          echo "title<<TITLE_EOF" >> $GITHUB_OUTPUT
          jq -r '.title' /tmp/issue.json >> $GITHUB_OUTPUT
          echo "TITLE_EOF" >> $GITHUB_OUTPUT

      - name: Run goose
        id: goose
        env:
          ISSUE_NUMBER: ${{ steps.issue.outputs.number }}
          ISSUE_TITLE: ${{ steps.issue.outputs.title }}
          TRIGGER_COMMENT: ${{ github.event.comment.body || 'Triggered via workflow_dispatch' }}
        run: |
          mkdir -p $HOME/.local/share/goose/sessions
          mkdir -p $HOME/.config/goose
          git config --global --add safe.directory "$GITHUB_WORKSPACE"

          echo "$GOOSE_RECIPE" | envsubst '$ISSUE_NUMBER $ISSUE_TITLE $TRIGGER_COMMENT' > /tmp/recipe.yaml

          goose run --recipe /tmp/recipe.yaml

          if [ -n "$(git status --porcelain)" ] && [ -f /tmp/issue_summary.txt ]; then
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "summary<<SUMMARY_EOF" >> $GITHUB_OUTPUT
            cat /tmp/issue_summary.txt >> $GITHUB_OUTPUT
            echo "SUMMARY_EOF" >> $GITHUB_OUTPUT
          else
            echo "has_changes=false" >> $GITHUB_OUTPUT
          fi

      - name: Verify no workflow changes
        if: steps.goose.outputs.has_changes == 'true'
        run: |
          if git diff --name-only | grep -q "^\.github/"; then
            echo "::error::Changes to .github/ are not allowed"
            git checkout -- .github/
          fi

      - name: Create Pull Request
        if: steps.goose.outputs.has_changes == 'true'
        uses: peter-evans/create-pull-request@c0f553fe549906ede9cf27b5156039d195d2ece0  # v8.1.0
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "fix: ${{ steps.issue.outputs.title }}"
          title: "fix: ${{ steps.issue.outputs.title }}"
          branch: goose/issue-${{ steps.issue.outputs.number }}
          delete-branch: true
          draft: true
          labels: goose-generated
          body: |
            Closes #${{ steps.issue.outputs.number }}

            ## Summary
            ${{ steps.goose.outputs.summary || 'See commits for details.' }}

            ---
            *Generated by goose Issue Solver*