/**
 * External Integrations
 * Slack, GitHub, Jira, and other third-party services
 */

export interface SlackMessage {
    channel: string;
    text: string;
    attachments?: any[];
    thread_ts?: string;
}

export interface GitHubIssue {
    title: string;
    body: string;
    labels?: string[];
    assignees?: string[];
}

export interface JiraTicket {
    project: string;
    summary: string;
    description: string;
    issueType: string;
    priority?: string;
}

export class IntegrationManager {
    private slackWebhook?: string;
    private githubToken?: string;
    private jiraCredentials?: { email: string; apiToken: string; domain: string };

    constructor() {
        this.slackWebhook = process.env.SLACK_WEBHOOK_URL;
        this.githubToken = process.env.GITHUB_TOKEN;

        if (process.env.JIRA_EMAIL && process.env.JIRA_API_TOKEN && process.env.JIRA_DOMAIN) {
            this.jiraCredentials = {
                email: process.env.JIRA_EMAIL,
                apiToken: process.env.JIRA_API_TOKEN,
                domain: process.env.JIRA_DOMAIN,
            };
        }
    }

    /**
     * Send Slack notification
     */
    async sendSlackNotification(message: SlackMessage): Promise<boolean> {
        if (!this.slackWebhook) {
            console.warn('⚠️  Slack webhook not configured');
            return false;
        }

        try {
            // In production, would make actual HTTP request
            console.log(`📢 Slack notification: ${message.text} to ${message.channel}`);
            return true;
        } catch (error) {
            console.error('Failed to send Slack notification:', error);
            return false;
        }
    }

    /**
     * Create GitHub issue
     */
    async createGitHubIssue(
        repo: string,
        issue: GitHubIssue
    ): Promise<{ number: number; url: string } | null> {
        if (!this.githubToken) {
            console.warn('⚠️  GitHub token not configured');
            return null;
        }

        try {
            // In production, would make actual GitHub API call
            const issueNumber = Math.floor(Math.random() * 1000);
            const url = `https://github.com/${repo}/issues/${issueNumber}`;

            console.log(`🐙 Created GitHub issue #${issueNumber}: ${issue.title}`);
            return { number: issueNumber, url };
        } catch (error) {
            console.error('Failed to create GitHub issue:', error);
            return null;
        }
    }

    /**
     * Create Jira ticket
     */
    async createJiraTicket(ticket: JiraTicket): Promise<{ key: string; url: string } | null> {
        if (!this.jiraCredentials) {
            console.warn('⚠️  Jira credentials not configured');
            return null;
        }

        try {
            // In production, would make actual Jira API call
            const ticketKey = `${ticket.project}-${Math.floor(Math.random() * 1000)}`;
            const url = `https://${this.jiraCredentials.domain}/browse/${ticketKey}`;

            console.log(`📋 Created Jira ticket ${ticketKey}: ${ticket.summary}`);
            return { key: ticketKey, url };
        } catch (error) {
            console.error('Failed to create Jira ticket:', error);
            return null;
        }
    }

    /**
     * Send alert to multiple channels
     */
    async sendAlert(
        message: string,
        severity: 'info' | 'warning' | 'error' | 'critical',
        channels: Array<'slack' | 'github' | 'jira'> = ['slack']
    ): Promise<void> {
        const emoji = {
            info: 'ℹ️',
            warning: '⚠️',
            error: '❌',
            critical: '🚨',
        };

        const formattedMessage = `${emoji[severity]} ${message}`;

        for (const channel of channels) {
            switch (channel) {
                case 'slack':
                    await this.sendSlackNotification({
                        channel: '#alerts',
                        text: formattedMessage,
                    });
                    break;

                case 'github':
                    if (severity === 'error' || severity === 'critical') {
                        await this.createGitHubIssue('org/repo', {
                            title: `[${severity.toUpperCase()}] ${message}`,
                            body: `Automated alert generated at ${new Date().toISOString()}`,
                            labels: [severity, 'automated'],
                        });
                    }
                    break;

                case 'jira':
                    if (severity === 'critical') {
                        await this.createJiraTicket({
                            project: 'OPS',
                            summary: message,
                            description: `Critical alert generated at ${new Date().toISOString()}`,
                            issueType: 'Bug',
                            priority: 'Highest',
                        });
                    }
                    break;
            }
        }
    }

    /**
     * Webhook receiver for external events
     */
    async handleWebhook(
        source: 'slack' | 'github' | 'jira',
        payload: any
    ): Promise<void> {
        console.log(`🔔 Received webhook from ${source}`);

        switch (source) {
            case 'slack':
                await this.handleSlackEvent(payload);
                break;
            case 'github':
                await this.handleGitHubEvent(payload);
                break;
            case 'jira':
                await this.handleJiraEvent(payload);
                break;
        }
    }

    private async handleSlackEvent(payload: any): Promise<void> {
        // Handle Slack slash commands, mentions, etc.
        console.log('Processing Slack event:', payload.type);
    }

    private async handleGitHubEvent(payload: any): Promise<void> {
        // Handle GitHub webhooks (issues, PRs, comments)
        console.log('Processing GitHub event:', payload.action);
    }

    private async handleJiraEvent(payload: any): Promise<void> {
        // Handle Jira webhooks (issue updates, comments)
        console.log('Processing Jira event:', payload.webhookEvent);
    }

    /**
     * Sync data from external source
     */
    async syncExternalData(
        source: 'github' | 'jira',
        query: string
    ): Promise<any[]> {
        switch (source) {
            case 'github':
                return this.syncGitHubData(query);
            case 'jira':
                return this.syncJiraData(query);
            default:
                return [];
        }
    }

    private async syncGitHubData(query: string): Promise<any[]> {
        // Fetch issues, PRs, etc. from GitHub
        console.log(`🔄 Syncing GitHub data: ${query}`);
        return [];
    }

    private async syncJiraData(query: string): Promise<any[]> {
        // Fetch tickets from Jira
        console.log(`🔄 Syncing Jira data: ${query}`);
        return [];
    }
}

export const integrationManager = new IntegrationManager();