import { Injectable, Logger, OnModuleInit } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { PlatformGraphqlService } from '../platform/platform-graphql.service';
import { OzonetelAgentService } from '../ozonetel/ozonetel-agent.service';

type ActiveCall = {
  ucid: string;
  agentId: string;
  callerNumber: string;
  callType: string;
  startTime: string;
  status: 'active' | 'on-hold';
};

@Injectable()
export class SupervisorService implements OnModuleInit {
  private readonly logger = new Logger(SupervisorService.name);
  private readonly activeCalls = new Map<string, ActiveCall>();

  constructor(
    private platform: PlatformGraphqlService,
    private ozonetel: OzonetelAgentService,
    private config: ConfigService,
  ) {}

  async onModuleInit() {
    this.logger.log('Supervisor service initialized');
  }

  handleCallEvent(event: any) {
    const action = event.action;
    const ucid = event.ucid ?? event.monitorUCID;
    const agentId = event.agent_id ?? event.agentID;
    const callerNumber = event.caller_id ?? event.callerID;
    const callType = event.call_type ?? event.Type;
    const eventTime =
      event.event_time ?? event.eventTime ?? new Date().toISOString();

    if (!ucid) return;

    if (action === 'Answered' || action === 'Calling') {
      this.activeCalls.set(ucid, {
        ucid,
        agentId,
        callerNumber,
        callType,
        startTime: eventTime,
        status: 'active',
      });
      this.logger.log(`Active call: ${agentId} ↔ ${callerNumber} (${ucid})`);
    } else if (action === 'Disconnect') {
      this.activeCalls.delete(ucid);
      this.logger.log(`Call ended: ${ucid}`);
    }
  }

  handleAgentEvent(event: any) {
    this.logger.log(
      `Agent event: ${event.agentId ?? event.agent_id} → ${event.action}`,
    );
  }

  getActiveCalls(): ActiveCall[] {
    return Array.from(this.activeCalls.values());
  }

  async getTeamPerformance(date: string): Promise<any> {
    // Get all agents from platform
    const agentData = await this.platform.query<any>(
      `{ agents(first: 20) { edges { node {
                id name ozonetelagentid npsscore
                maxidleminutes minnpsthreshold minconversionpercent
            } } } }`,
    );
    const agents = agentData?.agents?.edges?.map((e: any) => e.node) ?? [];

    // Fetch Ozonetel time summary per agent
    const summaries = await Promise.all(
      agents.map(async (agent: any) => {
        if (!agent.ozonetelagentid) return { ...agent, timeBreakdown: null };
        try {
          const summary = await this.ozonetel.getAgentSummary(
            agent.ozonetelagentid,
            date,
          );
          return { ...agent, timeBreakdown: summary };
        } catch (err) {
          this.logger.warn(
            `Failed to get summary for ${agent.ozonetelagentid}: ${err}`,
          );
          return { ...agent, timeBreakdown: null };
        }
      }),
    );

    return { date, agents: summaries };
  }
}