import { extname } from "node:path";
import {
  Body,
  Controller,
  Get,
  Param,
  Patch,
  Post,
  Put,
  UploadedFile,
  UseGuards,
  UseInterceptors,
} from "@nestjs/common";
import {
  ApiBearerAuth,
  ApiBody,
  ApiConsumes,
  ApiOperation,
  ApiParam,
  ApiTags,
} from "@nestjs/swagger";
import { FileInterceptor } from "@nestjs/platform-express";
import { diskStorage } from "multer";
import { LocalActorAuthGuard } from "src/auth/guards/actor-local.guard";
import { RolesGuard } from "src/auth/guards/role.guard";
import { Roles } from "src/decorators/roles.decorator";
import { CurrentUser } from "src/decorators/user.decorator";
import { MediaPolicyService } from "src/media-policy/media-policy.service";
import { DEFAULT_MEDIA_MAX_BYTES } from "src/client/client.service";
import { RoleEnum } from "src/Types&Enums/role.enum";
import { CreationMethod } from "./entities/schema/request-management.schema";
import { CreateExpertInitiatedFileDto } from "./dto/expert-initiated.dto";
import { SendPartyOtpDto, VerifyPartyOtpDto } from "./dto/party-otp.dto";
import { RunInquiriesV3Dto } from "./dto/run-inquiries-v3.dto";
import {
  CarBodyFormDto,
  DescriptionDto,
  LocationDto,
} from "./dto/create-request-management.dto";
import { ExpertAccidentFieldsDto } from "./dto/expert-accident-fields.dto";
import { RequestManagementService } from "./request-management.service";
import { ClaimRequestManagementService } from "src/claim-request-management/claim-request-management.service";
import { PartyRole } from "./entities/schema/partyRole.enum";
import {
  SelectOuterPartsV2Dto,
  SelectOuterPartsV2ResponseDto,
} from "src/claim-request-management/dto/select-outer-parts-v2.dto";
import {
  SelectOtherPartsV2ResponseDto,
} from "src/claim-request-management/dto/select-other-parts-v2.dto";
import { SelectOtherPartsV3Dto } from "src/claim-request-management/dto/select-other-parts-v3.dto";
import {
  UploadRequiredDocumentV2Dto,
  UploadRequiredDocumentV2ResponseDto,
} from "src/claim-request-management/dto/upload-document-v2.dto";
import {
  CapturePartV2Dto,
  CapturePartV2ResponseDto,
} from "src/claim-request-management/dto/capture-part-v2.dto";
import { GetCaptureRequirementsV2ResponseDto } from "src/claim-request-management/dto/capture-requirements-v2.dto";

/**
 * V3 field-expert in-person flow (one party at a time, standard workflow steps).
 *
 * THIRD_PARTY:
 *   create → OTP/verify (guilty) → [car-body-form if CAR_BODY] → run-inquiries (guilty + claim)
 *   → location/description/voice → sign → OTP/verify (damaged) → run-inquiries (damaged)
 *   → location/description/voice → sign → accident-fields → docs → outer parts → other parts
 *   → capture-part → car-capture → upload-video (blame accident video, last) → WAITING_FOR_EXPERT
 *
 * CAR_BODY: same but single party — omit second-party OTP/inquiries/sign steps.
 */
@ApiTags("expert-initiated blame (mirror v3 in-person)")
@Controller("v3/expert-initiated/blame-request-management")
@ApiBearerAuth()
@UseGuards(LocalActorAuthGuard, RolesGuard)
@Roles(RoleEnum.FIELD_EXPERT)
export class ExpertInitiatedBlameV3MirrorController {
  constructor(
    private readonly requestManagementService: RequestManagementService,
    private readonly claimRequestManagementService: ClaimRequestManagementService,
    private readonly mediaPolicyService: MediaPolicyService,
  ) {}

  @Post()
  @ApiOperation({ summary: "Create IN_PERSON blame file" })
  @ApiBody({ type: CreateExpertInitiatedFileDto })
  async create(
    @CurrentUser() expert: any,
    @Body() dto: CreateExpertInitiatedFileDto,
  ) {
    return this.requestManagementService.createExpertInitiatedBlameV2(expert, {
      ...dto,
      creationMethod: CreationMethod.IN_PERSON,
    });
  }

  @Get("claim-id/:requestId")
  @ApiParam({ name: "requestId", description: "Blame request ID" })
  @ApiOperation({
    summary: "Get linked claim ID",
    description:
      "Returns the claim auto-created during guilty-party run-inquiries. Use this claim ID for capture-requirements, upload-document, and part-selection endpoints.",
  })
  async getLinkedClaimId(
    @Param("requestId") requestId: string,
    @CurrentUser() expert: any,
  ) {
    return this.requestManagementService.getV3LinkedClaimForExpert(
      expert,
      requestId,
    );
  }

  @Post("send-party-otp/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: SendPartyOtpDto })
  @ApiOperation({
    summary: "Send OTP to one party",
    description: "Guilty party first; damaged party after guilty party has signed (THIRD_PARTY).",
  })
  async sendPartyOtp(
    @CurrentUser() expert: any,
    @Param("requestId") requestId: string,
    @Body() dto: SendPartyOtpDto,
  ) {
    return this.requestManagementService.sendPartyOtpV2(expert, requestId, dto);
  }

  @Post("verify-party-otp/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: VerifyPartyOtpDto })
  @ApiOperation({
    summary: "Verify one party OTP",
    description: "FIRST (guilty) then SECOND (damaged) on THIRD_PARTY files.",
  })
  async verifyPartyOtp(
    @CurrentUser() expert: any,
    @Param("requestId") requestId: string,
    @Body() dto: VerifyPartyOtpDto,
  ) {
    return this.requestManagementService.verifyPartyOtpV2(expert, requestId, dto);
  }

  @Post("car-body-form/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: CarBodyFormDto })
  @ApiOperation({
    summary: "CAR_BODY only — accident type before inquiries",
    description: "Submit after guilty-party OTP verify, before run-inquiries.",
  })
  async carBodyForm(
    @Param("requestId") requestId: string,
    @Body() body: CarBodyFormDto,
    @CurrentUser() expert: any,
  ) {
    return this.requestManagementService.carBodyAccidentTypeFormV3(
      requestId,
      body,
      expert,
    );
  }

  @Post("run-inquiries/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: RunInquiriesV3Dto })
  @ApiOperation({
    summary: "Run external inquiries for the current party",
    description:
      "1st call = guilty party (+ auto claim). 2nd call = damaged party (THIRD_PARTY, after guilty sign). " +
      "Advances workflow to FIRST_INITIAL_FORM or SECOND_INITIAL_FORM.",
  })
  async runInquiries(
    @CurrentUser() expert: any,
    @Param("requestId") requestId: string,
    @Body() dto: RunInquiriesV3Dto,
  ) {
    return this.requestManagementService.runInquiriesV3(requestId, expert, dto);
  }

  @Post("add-detail-location/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: LocationDto })
  @ApiOperation({ summary: "Add location for current party (partyRole FIRST or SECOND)" })
  async addLocation(
    @Param("requestId") requestId: string,
    @Body() body: LocationDto,
    @CurrentUser() expert: any,
    @Body("partyRole") partyRole?: string,
  ) {
    return this.requestManagementService.addPartyLocationV3(
      requestId,
      expert,
      body,
      partyRole,
    );
  }

  @Post("add-detail-description/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: DescriptionDto })
  @ApiOperation({ summary: "Add description for current party" })
  async addDescription(
    @Param("requestId") requestId: string,
    @Body() body: DescriptionDto,
    @CurrentUser() expert: any,
    @Body("partyRole") partyRole?: string,
  ) {
    return this.requestManagementService.addPartyDescriptionV3(
      requestId,
      expert,
      body,
      partyRole,
    );
  }

  @ApiBody({
    schema: {
      type: "object",
      properties: {
        file: { type: "string", format: "binary" },
        partyRole: { type: "string", enum: ["FIRST", "SECOND"] },
      },
      required: ["file"],
    },
  })
  @ApiConsumes("multipart/form-data")
  @UseInterceptors(
    FileInterceptor("file", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/voice",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `v3-expert-voice-${unique}${ex}`);
        },
      }),
    }),
  )
  @Post("upload-voice/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiOperation({ summary: "Upload voice for current party" })
  async uploadVoice(
    @Param("requestId") requestId: string,
    @CurrentUser() expert: any,
    @UploadedFile() voice: Express.Multer.File,
    @Body("partyRole") partyRole?: string,
  ) {
    await this.mediaPolicyService.assertForBlame(voice, requestId, "voice");
    return this.requestManagementService.addPartyVoiceV3(
      requestId,
      expert,
      voice,
      partyRole,
    );
  }

  @Put("sign/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiConsumes("multipart/form-data")
  @ApiOperation({ summary: "Party on-site signature" })
  @ApiBody({
    schema: {
      type: "object",
      required: ["partyRole", "sign"],
      properties: {
        partyRole: { type: "string", enum: ["FIRST", "SECOND"] },
        isAccept: { type: "boolean", default: true },
        sign: { type: "string", format: "binary" },
      },
    },
  })
  @UseInterceptors(
    FileInterceptor("sign", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/signs",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `v3-expert-party-${unique}${ex}`);
        },
      }),
    }),
  )
  async sign(
    @Param("requestId") requestId: string,
    @Body() body: { partyRole?: string; isAccept?: string | boolean },
    @CurrentUser() expert: any,
    @UploadedFile() sign: Express.Multer.File,
  ) {
    await this.mediaPolicyService.assertForBlame(sign, requestId, "image");
    const partyRole =
      body?.partyRole === "SECOND" ? PartyRole.SECOND : PartyRole.FIRST;
    const isAccept = !(body?.isAccept === false || body?.isAccept === "false");
    return this.requestManagementService.expertUploadPartySignatureV3(
      expert,
      requestId,
      partyRole,
      isAccept,
      sign,
    );
  }

  @Post("accident-fields/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiBody({ type: ExpertAccidentFieldsDto })
  @ApiOperation({
    summary: "Accident type / fields (after all signatures)",
    description:
      "Saves accident fields only. Does not move to WAITING_FOR_EXPERT — that happens after the final blame accident video.",
  })
  async addAccidentFields(
    @Param("requestId") requestId: string,
    @Body() fields: ExpertAccidentFieldsDto,
    @CurrentUser() expert: any,
  ) {
    return this.requestManagementService.expertAddAccidentFieldsForBlameV3(
      expert,
      requestId,
      fields,
    );
  }

  @Get("capture-requirements/:claimRequestId")
  @ApiParam({ name: "claimRequestId" })
  @ApiOperation({ summary: "List required claim documents" })
  async getCaptureRequirements(
    @Param("claimRequestId") claimRequestId: string,
    @CurrentUser() expert: any,
  ): Promise<GetCaptureRequirementsV2ResponseDto> {
    return this.claimRequestManagementService.getCaptureRequirementsV3(
      claimRequestId,
      expert.sub,
      expert,
    );
  }

  @Post("upload-document/:claimRequestId")
  @ApiParam({ name: "claimRequestId" })
  @ApiConsumes("multipart/form-data")
  @UseInterceptors(
    FileInterceptor("file", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/claim-documents",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `${file.originalname.split(".")[0]}-${unique}${ex}`);
        },
      }),
    }),
  )
  @ApiOperation({ summary: "Upload one required claim document" })
  async uploadDocument(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: UploadRequiredDocumentV2Dto,
    @UploadedFile() file: Express.Multer.File,
    @CurrentUser() expert: any,
  ): Promise<UploadRequiredDocumentV2ResponseDto> {
    await this.mediaPolicyService.assertForClaim(file, claimRequestId, "image");
    return this.claimRequestManagementService.uploadRequiredDocumentV3(
      claimRequestId,
      body,
      file,
      expert.sub,
      expert,
    );
  }

  @Patch("select-outer-parts/:claimRequestId")
  @ApiParam({ name: "claimRequestId" })
  @ApiBody({ type: SelectOuterPartsV2Dto })
  @ApiOperation({ summary: "Select damaged outer parts" })
  async selectOuterParts(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: SelectOuterPartsV2Dto,
    @CurrentUser() expert: any,
  ): Promise<SelectOuterPartsV2ResponseDto> {
    return this.claimRequestManagementService.selectOuterPartsV3(
      claimRequestId,
      body,
      expert.sub,
      expert,
    );
  }

  @Patch("select-other-parts/:claimRequestId")
  @ApiParam({ name: "claimRequestId", example: "507f1f77bcf86cd799439011" })
  @ApiConsumes("multipart/form-data")
  @UseInterceptors(
    FileInterceptor("file", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/claim-required-document",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `v3-other-parts-${unique}${ex}`);
        },
      }),
    }),
  )
  @ApiOperation({
    summary: "Select other damaged parts (V3)",
    description:
      "Other parts only — sheba and national code were collected during run-inquiries. Optional car green card file.",
  })
  @ApiBody({
    description: "Other parts selection. Bank info is already on the claim from run-inquiries.",
    schema: {
      type: "object",
      properties: {
        otherParts: {
          oneOf: [
            { type: "array", items: { type: "string", enum: ["engine", "suspension", "brake_system", "electrical", "radiator", "transmission", "exhaust", "headlight", "taillight", "mirror", "glass"] } },
            { type: "string", description: "JSON string array for multipart" },
          ],
          example: ["engine", "suspension"],
        },
        file: { type: "string", format: "binary", description: "Optional car green card" },
      },
    },
  })
  async selectOtherParts(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: SelectOtherPartsV3Dto,
    @CurrentUser() expert: any,
    @UploadedFile() file?: Express.Multer.File,
  ): Promise<SelectOtherPartsV2ResponseDto> {
    if (file) {
      await this.mediaPolicyService.assertForClaim(file, claimRequestId, "image");
    }
    return this.claimRequestManagementService.selectOtherPartsV3(
      claimRequestId,
      body,
      expert.sub,
      expert,
      file,
    );
  }

  @Post("capture-part/:claimRequestId")
  @ApiParam({ name: "claimRequestId", example: "507f1f77bcf86cd799439011" })
  @ApiConsumes("multipart/form-data")
  @UseInterceptors(
    FileInterceptor("file", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/claim-captures",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `v3-capture-${unique}${ex}`);
        },
      }),
    }),
  )
  @ApiOperation({
    summary: "Field — car angles and damaged-part photos",
    description:
      "CAPTURE_PART_DAMAGES: (1) all damaged-part photos, (2) four car angles, (3) chassis/engine/metal-plate via upload-document. Then car-capture walk-around video.",
  })
  @ApiBody({
    schema: {
      type: "object",
      required: ["captureType", "captureKey", "file"],
      properties: {
        captureType: {
          type: "string",
          enum: ["angle", "part"],
          example: "angle",
        },
        captureKey: {
          type: "string",
          example: "front",
          description:
            "For angle: front/back/left/right. For part: hood/front_bumper/etc.",
        },
        file: { type: "string", format: "binary" },
      },
    },
  })
  async capturePart(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: CapturePartV2Dto,
    @UploadedFile() file: Express.Multer.File,
    @CurrentUser() expert: any,
  ): Promise<CapturePartV2ResponseDto> {
    await this.mediaPolicyService.assertForClaim(file, claimRequestId, "image");
    return this.claimRequestManagementService.capturePartV3(
      claimRequestId,
      body,
      file,
      expert.sub,
      expert,
    );
  }

  @Patch("car-capture/:claimRequestId")
  @ApiParam({ name: "claimRequestId", example: "507f1f77bcf86cd799439011" })
  @ApiConsumes("multipart/form-data")
  @UseInterceptors(
    FileInterceptor("file", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/car-capture-videos/",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `v3-claim-video-${unique}${ex}`);
        },
      }),
    }),
  )
  @ApiBody({
    schema: {
      type: "object",
      required: ["file"],
      properties: { file: { type: "string", format: "binary" } },
    },
  })
  @ApiOperation({
    summary: "Field — walk-around video",
    description:
      "Upload after capture-part is complete (parts, angles, capture-phase docs). Required before the final blame accident video.",
  })
  async carCapture(
    @Param("claimRequestId") claimRequestId: string,
    @UploadedFile("file") file: Express.Multer.File,
    @CurrentUser() expert: any,
  ) {
    await this.mediaPolicyService.assertForClaim(file, claimRequestId, "video");
    return this.claimRequestManagementService.setVideoCaptureV3(
      claimRequestId,
      file,
      expert.sub,
      expert,
    );
  }

  @ApiBody({
    schema: {
      type: "object",
      required: ["file"],
      properties: { file: { type: "string", format: "binary" } },
    },
  })
  @ApiConsumes("multipart/form-data")
  @UseInterceptors(
    FileInterceptor("file", {
      limits: { fileSize: DEFAULT_MEDIA_MAX_BYTES },
      storage: diskStorage({
        destination: "./files/video",
        filename: (req, file, callback) => {
          const unique = Date.now();
          const ex = extname(file.originalname);
          callback(null, `v3-blame-accident-${unique}${ex}`);
        },
      }),
    }),
  )
  @Post("upload-video/:requestId")
  @ApiParam({ name: "requestId" })
  @ApiOperation({
    summary: "Blame accident video (final step)",
    description:
      "Last step of the V3 flow. Requires claim walk-around video and completed capture. Sets blame status to WAITING_FOR_EXPERT.",
  })
  async uploadBlameVideo(
    @Param("requestId") requestId: string,
    @CurrentUser() expert: any,
    @UploadedFile() file: Express.Multer.File,
  ) {
    await this.mediaPolicyService.assertForBlame(file, requestId, "video");
    return this.requestManagementService.expertUploadBlameVideoV3(
      expert,
      requestId,
      file,
    );
  }
}