name: Add to Project

on:
  workflow_dispatch:
    inputs:
      issue_or_pr_url:
        description: 'Issue or PR URL (https://github.com/<owner>/<repo>/issues/<number> or .../pull/<number>)'
        required: true
        default: ''

env:
  PROJECT_V2_ID: PVT_kwHOAGJHa84AFWnr

jobs:
  add-to-project:
    runs-on: ubuntu-latest
    steps:
      - name: Add to Project
        env:
          GH_TOKEN: ${{ secrets.GH_TOKEN }}
        run: |
          ISSUE_OR_PR_URL="${{ github.event.inputs.issue_or_pr_url }}"
          ISSUE_OR_PR_URL="${ISSUE_OR_PR_URL%%\?*}"
          ISSUE_OR_PR_URL="${ISSUE_OR_PR_URL%/}"

          if ! echo "$ISSUE_OR_PR_URL" | grep -qE '^https://github\.com/[^/]+/[^/]+/(issues|pull)/[0-9]+$'; then
            echo "Invalid URL format. Expected: https://github.com/<owner>/<repo>/issues/<number> or .../pull/<number>"
            echo "Got: $ISSUE_OR_PR_URL"
            exit 1
          fi

          REPO_PATH=$(echo "$ISSUE_OR_PR_URL" | awk -F'/' '{print $4"/"$5}')
          NUMBER=$(echo "$ISSUE_OR_PR_URL" | grep -oE '[0-9]+$')

          if echo "$ISSUE_OR_PR_URL" | grep -q "/pull/"; then
            RESOURCE_TYPE="pulls"
          else
            RESOURCE_TYPE="issues"
          fi

          REST_RESPONSE=$(curl -s -w "\n%{http_code}" -H "Authorization: token $GH_TOKEN" \
            "https://api.github.com/repos/$REPO_PATH/$RESOURCE_TYPE/$NUMBER")
          HTTP_STATUS=$(echo "$REST_RESPONSE" | tail -n1)
          REST_BODY=$(echo "$REST_RESPONSE" | sed '$d')

          if [ "$HTTP_STATUS" != "200" ]; then
            echo "REST API returned HTTP $HTTP_STATUS"
            echo "$REST_BODY"
            exit 1
          fi

          NODE_ID=$(echo "$REST_BODY" | jq -r '.node_id')

          if [ -z "$NODE_ID" ] || [ "$NODE_ID" = "null" ]; then
            echo "Failed to get node ID. REST response:"
            echo "$REST_BODY"
            exit 1
          fi

          echo "Node ID: $NODE_ID"

          GRAPHQL_PAYLOAD=$(jq -n \
            --arg nodeId "$NODE_ID" \
            --arg projectId "$PROJECT_V2_ID" \
            '{"query": "mutation($contentId: ID!, $projectId: ID!) { addProjectV2ItemById(input: { contentId: $contentId, projectId: $projectId }) { item { id } } }", "variables": {"contentId": $nodeId, "projectId": $projectId}}')

          RESPONSE=$(curl -s -X POST \
            -H "Authorization: bearer $GH_TOKEN" \
            -H "Content-Type: application/json" \
            https://api.github.com/graphql \
            -d "$GRAPHQL_PAYLOAD")
          echo "$RESPONSE"

          if ! echo "$RESPONSE" | jq '.' > /dev/null 2>&1; then
            echo "Non-JSON response received"
            exit 1
          fi

          if echo "$RESPONSE" | jq -e '.errors' > /dev/null; then
            echo "GraphQL error occurred"
            exit 1
          fi