export const handler = async (event) => {
    try {
        console.log(event)
        // Parse the incoming webhook payload from Backlog
        const body = JSON.parse(event.body);

        if (body.type !== 1) {
            return {
                statusCode: 200,
                body: JSON.stringify({ message: '課題追加以外のアクションです' })
            };
        }

        const getSeverity = (priorityId) => {
            switch(priorityId){
                case 4:
                    return 'info'
                case 3:
                    return 'warning'
                case 2:
                    return 'critical'
                default:
                throw new Error('不適切な優先度が入力されました。')
            }
        }

        // BackLogから必要な項目を抽出
        const { content, project } = body;
        // タイトル
        const summary = `New Backlog Issue: ${content.summary}`;
        // 重要度
        const severity = getSeverity(content.priority.id)
        // ソース
        const source = project.projectKey;
        const customDetails = {
            '課題タイプ': content.issueType.name,
            '課題の詳細': content.description,
            '優先度': content.priority.name,
        };

        // Prepare the payload for PagerDuty
        const pagerDutyParams = {
            routing_key: PAGERDUTY_INTEGRATION_KEY, // 先ほどのIntegration Keyを指定
            event_action: 'trigger',
            payload: {
                summary: summary,
                source: source,
                severity: severity, 
                custom_details: customDetails
            }
        };

        // Send the event to PagerDuty using fetch
        const response = await fetch('https://events.pagerduty.com/v2/enqueue', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(pagerDutyParams)
        });

        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }

        const data = await response.json();
        console.log('PagerDuty Response:', data);

        return {
            statusCode: 200,
            body: JSON.stringify({ message: 'PagerDuty incident created successfully.' })
        };
    } catch (error) {
        console.error('Error:', error);
        return {
            statusCode: 500,
            body: JSON.stringify({ message: 'Error creating PagerDuty incident.' })
        };
    }
};