package com.walkguide.controller;

import com.walkguide.dto.ApiResponse;
import com.walkguide.dto.request.CallNotifyRequest;
import com.walkguide.dto.request.CallTokenRequest;
import com.walkguide.dto.response.AgoraTokenResponse;
import com.walkguide.security.SecurityHelper;
import com.walkguide.service.AgoraTokenService;
import com.walkguide.service.CallNotificationService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.security.SecurityRequirement;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.Valid;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Map;

@RestController
@RequestMapping("/api/v1/shared/call")
@RequiredArgsConstructor
@Slf4j
@Tag(name = "Call", description = "VoIP call via Agora RTC")
@SecurityRequirement(name = "bearerAuth")
public class CallController {

    private final AgoraTokenService agoraTokenService;
    private final CallNotificationService callNotificationService;

    @PostMapping("/token")
    @Operation(summary = "Generate Agora token", description = "Caller requests a token before joining Agora")
    public ResponseEntity<ApiResponse<AgoraTokenResponse>> generateToken(
            @Valid @RequestBody CallTokenRequest req) {

        Long callerId = SecurityHelper.getCurrentUserId();
        AgoraTokenResponse response = agoraTokenService.generateToken(callerId, req.getReceiverId());

        log.info("[CALL] Token generated | caller={} receiver={} channel={}",
                callerId, req.getReceiverId(), response.getChannelName());

        return ResponseEntity.ok(ApiResponse.ok(response, "Token Agora berhasil digenerate"));
    }

    @PostMapping("/notify")
    @Operation(summary = "Notify receiver of incoming call")
    public ResponseEntity<ApiResponse<Void>> notifyCall(
            @Valid @RequestBody CallNotifyRequest req) {

        Long callerId = SecurityHelper.getCurrentUserId();
        String message = callNotificationService.notifyIncomingCall(callerId, req);
        return ResponseEntity.ok(ApiResponse.ok(null, message));
    }

    @PostMapping("/end")
    @Operation(summary = "Notify end of call")
    public ResponseEntity<ApiResponse<Void>> endCall(
            @RequestBody Map<String, Long> body) {

        Long callerId = SecurityHelper.getCurrentUserId();
        Long otherId = body.get("otherId");
        callNotificationService.notifyCallEnded(callerId, otherId);

        return ResponseEntity.ok(ApiResponse.ok(null, "Call ended"));
    }
}