name: Redirect contributions to Gitea

on:
    issues:
        types: [opened, reopened]
    pull_request_target:
        types: [opened, reopened]

permissions:
    issues: write
    pull-requests: write

concurrency:
    group: migrate-${{ github.event_name }}-${{ github.event.issue.number || github.event.pull_request.number }}

env:
    GITEA_API_URL: https://git.lechner-systems.at/api/v1
    GITEA_REPOSITORY: FrauJulian/Discord-Audio-Stream

jobs:
    migrate-issue:
        if: github.event_name == 'issues'
        runs-on: ubuntu-latest
        steps:
            - name: Migrate issue and close
              env:
                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
                  GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
              run: |
                  set -euo pipefail

                  number="$(jq -r '.issue.number' "$GITHUB_EVENT_PATH")"
                  title="$(jq -r '.issue.title' "$GITHUB_EVENT_PATH")"
                  body="$(jq -r '.issue.body // ""' "$GITHUB_EVENT_PATH")"
                  author="$(jq -r '.issue.user.login' "$GITHUB_EVENT_PATH")"
                  source_url="$(jq -r '.issue.html_url' "$GITHUB_EVENT_PATH")"
                  github_api="${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}"
                  migrated_url="$(
                      curl --fail --silent --show-error \
                          --header "Authorization: Bearer ${GITHUB_TOKEN}" \
                          --header "Accept: application/vnd.github+json" \
                          "${github_api}/issues/${number}/comments?per_page=100" |
                          jq -r '[.[] | select(.user.login == "github-actions[bot]" and (.body | startswith("Migrated to Gitea: ")))] | first | .body // "" | sub("^Migrated to Gitea: "; "")'
                  )"

                  if [ -z "$migrated_url" ]; then
                      migrated_body="${body}

                  ---
                  Originally opened by @${author} on GitHub: ${source_url}"

                      jq -n \
                          --arg title "$title" \
                          --arg body "$migrated_body" \
                          '{title: $title, body: $body}' > gitea-request.json

                      curl --fail-with-body \
                          --request POST \
                          --header "Authorization: token ${GITEA_TOKEN}" \
                          --header "Content-Type: application/json" \
                          --data @gitea-request.json \
                          "${GITEA_API_URL}/repos/${GITEA_REPOSITORY}/issues" > gitea-response.json

                      migrated_url="$(jq -r '.html_url' gitea-response.json)"
                      jq -n --arg body "Migrated to Gitea: ${migrated_url}" '{body: $body}' > github-comment.json
                      curl --fail-with-body \
                          --request POST \
                          --header "Authorization: Bearer ${GITHUB_TOKEN}" \
                          --header "Content-Type: application/json" \
                          --data @github-comment.json \
                          "${github_api}/issues/${number}/comments"
                  fi

                  curl --fail-with-body \
                      --request PATCH \
                      --header "Authorization: Bearer ${GITHUB_TOKEN}" \
                      --header "Content-Type: application/json" \
                      --data '{"state":"closed","state_reason":"not_planned"}' \
                      "${github_api}/issues/${number}"

    redirect-pull-request:
        if: github.event_name == 'pull_request_target'
        runs-on: ubuntu-latest
        steps:
            - name: Redirect pull request and close
              env:
                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
              run: |
                  set -euo pipefail

                  number="$(jq -r '.pull_request.number' "$GITHUB_EVENT_PATH")"
                  github_api="${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}"

                  curl --fail-with-body \
                      --request POST \
                      --header "Authorization: Bearer ${GITHUB_TOKEN}" \
                      --header "Content-Type: application/json" \
                      --data '{"body":"Please open the Pull Request on Gitea"}' \
                      "${github_api}/issues/${number}/comments"

                  curl --fail-with-body \
                      --request PATCH \
                      --header "Authorization: Bearer ${GITHUB_TOKEN}" \
                      --header "Content-Type: application/json" \
                      --data '{"state":"closed"}' \
                      "${github_api}/pulls/${number}"