import { Controller, Get, Post, Body, Query, Sse, Logger } from '@nestjs/common';
import { Observable, filter, map } from 'rxjs';
import { SupervisorService } from './supervisor.service';
import { LogStreamService } from '../logging/log-stream.service';

@Controller('api/supervisor')
export class SupervisorController {
    private readonly logger = new Logger(SupervisorController.name);

    constructor(private readonly supervisor: SupervisorService) {}

    @Get('active-calls')
    getActiveCalls() {
        return this.supervisor.getActiveCalls();
    }

    @Sse('active-calls/stream')
    streamActiveCalls(): Observable<MessageEvent> {
        this.logger.log('[SSE] Active calls stream opened');
        return this.supervisor.activeCallSubject.pipe(
            map(event => ({
                data: JSON.stringify(event),
            } as MessageEvent)),
        );
    }

    @Get('team-performance')
    async getTeamPerformance(@Query('date') date?: string) {
        const targetDate = date ?? new Date().toISOString().split('T')[0];
        this.logger.log(`Team performance: date=${targetDate}`);
        return this.supervisor.getTeamPerformance(targetDate);
    }

    @Post('call-event')
    handleCallEvent(@Body() body: any) {
        const event = body.data ?? body;
        this.logger.log(`[CALL-EVENT] ${JSON.stringify(event)}`);
        this.supervisor.handleCallEvent(event);
        return { received: true };
    }

    @Post('agent-event')
    handleAgentEvent(@Body() body: any) {
        const event = body.data ?? body;
        this.logger.log(`[AGENT-EVENT] ${JSON.stringify(event)}`);
        this.supervisor.handleAgentEvent(event);
        return { received: true };
    }

    @Get('agent-state')
    getAgentState(@Query('agentId') agentId: string) {
        const state = this.supervisor.getAgentState(agentId);
        return state ?? { state: 'offline', timestamp: null };
    }

    @Sse('agent-state/stream')
    streamAgentState(@Query('agentId') agentId: string): Observable<MessageEvent> {
        this.logger.log(`[SSE] Agent state stream opened for ${agentId}`);
        return this.supervisor.agentStateSubject.pipe(
            filter(event => event.agentId === agentId),
            map(event => ({
                data: JSON.stringify({ state: event.state, timestamp: event.timestamp }),
            } as MessageEvent)),
        );
    }

    // Worklist SSE — broadcast to all connected agents. When a missed
    // call is created by the webhook, this fires immediately so agents
    // don't wait for the 30s worklist poll. The payload includes the
    // caller's phone + name for a toast notification.
    @Sse('worklist/stream')
    streamWorklistUpdates(): Observable<MessageEvent> {
        this.logger.log('[SSE] Worklist stream opened');
        return this.supervisor.worklistSubject.pipe(
            map(event => ({
                data: JSON.stringify(event),
            } as MessageEvent)),
        );
    }

    @Get('logs/recent')
    getRecentLogs(@Query('limit') limit?: string) {
        return LogStreamService.instance.getRecentLogs(limit ? parseInt(limit, 10) : 200);
    }

    @Sse('logs/stream')
    streamLogs(): Observable<MessageEvent> {
        this.logger.log('[SSE] Log stream opened');
        return LogStreamService.instance.logSubject.pipe(
            map(entry => ({
                data: JSON.stringify(entry),
            } as MessageEvent)),
        );
    }
}