name: Daily Iterate

on:
  schedule:
    # 6:00 AM UTC daily — analyzes previous day's discovery run
    - cron: "0 6 * * *"
  workflow_dispatch:
    inputs:
      force:
        description: "Force iterate even if no new runs detected"
        required: false
        default: "false"
        type: choice
        options:
          - "false"
          - "true"

env:
  NODE_VERSION: "20"

jobs:
  iterate:
    runs-on: ubuntu-latest
    environment: TradingAgent
    timeout-minutes: 30
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GH_TOKEN }}

      - name: Set up git identity
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}

      - name: Install Claude Code CLI
        run: npm install -g @anthropic-ai/claude-code

      - name: Run /iterate
        env:
          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
          CI: "true"
        run: |
          claude -p "/iterate" --dangerously-skip-permissions

      - name: Check for changes
        id: changes
        run: |
          git add docs/iterations/ tradingagents/ || true
          if git diff --cached --quiet; then
            echo "has_changes=false" >> "$GITHUB_OUTPUT"
            echo "No changes produced by /iterate"
          else
            echo "has_changes=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Commit changes
        if: steps.changes.outputs.has_changes == 'true'
        run: |
          DATE=$(date -u +%Y-%m-%d)
          git commit -m "learn(iterate): ${DATE} — automated iteration run"

      - name: Handle rolling PR
        if: steps.changes.outputs.has_changes == 'true'
        env:
          GH_TOKEN: ${{ secrets.GH_TOKEN }}
        run: |
          BRANCH="iterate/current"
          DATE=$(date -u +%Y-%m-%d)
          SEPARATOR="---"

          EXISTING_PR=$(gh pr list \
            --repo Aitous/TradingAgents \
            --head "$BRANCH" \
            --state open \
            --json number \
            --jq '.[0].number // empty')

          if [ -n "$EXISTING_PR" ]; then
            git fetch origin "$BRANCH" 2>/dev/null || true
            git pull --rebase origin main
            git push origin HEAD:"$BRANCH" --force-with-lease
            {
              cat docs/iterations/LEARNINGS.md
              echo ""
              echo "$SEPARATOR"
              echo "*Last updated: ${DATE} by automated iterate workflow*"
            } > /tmp/pr_body.md
            gh pr edit "$EXISTING_PR" --repo Aitous/TradingAgents --body-file /tmp/pr_body.md
            echo "Updated existing PR #${EXISTING_PR}"
          else
            git checkout -b "$BRANCH" 2>/dev/null || git checkout "$BRANCH"
            git push -u origin "$BRANCH" --force-with-lease
            {
              cat docs/iterations/LEARNINGS.md
              echo ""
              echo "$SEPARATOR"
              echo "*Opened: ${DATE} by automated iterate workflow*"
              echo "*Merge to apply learnings and reset the iteration cycle.*"
            } > /tmp/pr_body.md
            gh label create "automated" --color "0075ca" --description "Automated workflow" --repo Aitous/TradingAgents 2>/dev/null || true
            gh label create "iteration" --color "e4e669" --description "Iteration system" --repo Aitous/TradingAgents 2>/dev/null || true
            gh pr create \
              --repo Aitous/TradingAgents \
              --title "learn(iterate): automated improvements — ${DATE}" \
              --body-file /tmp/pr_body.md \
              --label "automated,iteration" \
              --base main
            echo "Opened new PR"
          fi