name: Forward Issues to Gitea

on:
  issues:
    types: [opened]

permissions:
  issues: write

jobs:
  forward:
    runs-on: ubuntu-latest
    steps:
      - name: Build issue body
        env:
          ISSUE_BODY: ${{ github.event.issue.body }}
          ISSUE_URL: ${{ github.event.issue.html_url }}
          ISSUE_AUTHOR: ${{ github.event.issue.user.login }}
        run: |
          jq -n \
            --arg url "$ISSUE_URL" \
            --arg author "$ISSUE_AUTHOR" \
            --arg body "$ISSUE_BODY" \
            '">" + " Forwarded from GitHub: " + $url + "\n> Reported by: [@" + $author + "](https://github.com/" + $author + ")\n\n---\n\n" + $body' \
            -r > /tmp/gitea-issue-body.md || exit 1

      - name: Resolve label IDs
        id: labels
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          GH_LABELS: ${{ toJSON(github.event.issue.labels.*.name) }}
        run: |
          GITEA_LABELS=$(curl -f \
            -H "Authorization: token ${GITEA_TOKEN}" \
            "https://gitea.lerkolabs.com/api/v1/repos/lerkolabs/uptop/labels?limit=50") || exit 1

          LABEL_IDS=$(echo "$GITEA_LABELS" | jq --argjson gh "$GH_LABELS" '
            [.[] | select(
              .name == "github" or
              (.name as $n | $gh | index($n) != null)
            ) | .id]
          ')

          echo "ids=${LABEL_IDS}" >> "$GITHUB_OUTPUT"

      - name: Create Gitea issue
        id: create
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          ISSUE_TITLE: ${{ github.event.issue.title }}
          LABEL_IDS: ${{ steps.labels.outputs.ids }}
        run: |
          RESPONSE=$(curl -f -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            "https://gitea.lerkolabs.com/api/v1/repos/lerkolabs/uptop/issues" \
            -d "$(jq -n \
              --arg title "$ISSUE_TITLE" \
              --rawfile body /tmp/gitea-issue-body.md \
              --argjson labels "$LABEL_IDS" \
              '{title: $title, body: $body, labels: $labels}'
            )") || exit 1

          GITEA_URL=$(echo "$RESPONSE" | jq -re '.html_url') || exit 1
          GITEA_NUM=$(echo "$RESPONSE" | jq -re '.number') || exit 1

          echo "url=${GITEA_URL}" >> "$GITHUB_OUTPUT"
          echo "number=${GITEA_NUM}" >> "$GITHUB_OUTPUT"

      - name: Comment on GitHub issue
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITEA_URL: ${{ steps.create.outputs.url }}
        run: |
          gh issue comment "${{ github.event.issue.number }}" \
            --repo "${{ github.repository }}" \
            --body "Thanks for reporting! This issue has been forwarded to our [primary tracker](${GITEA_URL}). Discussion and updates will happen there."