import {
  BadRequestException,
  Body,
  Controller,
  Get,
  Param,
  Post,
  Query,
  UseGuards,
} from "@nestjs/common";
import {
  ApiBearerAuth,
  ApiBody,
  ApiOperation,
  ApiParam,
  ApiQuery,
  ApiTags,
} from "@nestjs/swagger";
import { LocalActorAuthGuard } from "src/auth/guards/actor-local.guard";
import { ClaimRequestManagementService } from "src/claim-request-management/claim-request-management.service";
import {
  FANAVARAN_CLIENT_KEYS,
  FANAVARAN_CLIENT_SWAGGER_ENUM,
  isFanavaranClientKey,
  listFanavaranClientProfiles,
  normalizeFanavaranClientKey,
  resolveFanavaranClientKey,
} from "src/core/config/fanavaran-client.config";

@ApiTags("fanavaran")
@Controller("v2/fanavaran")
@ApiBearerAuth()
@UseGuards(LocalActorAuthGuard)
export class FanavaranController {
  constructor(
    private readonly claimRequestManagementService: ClaimRequestManagementService,
  ) {}

  @Get("clients")
  @ApiOperation({
    summary: "List supported Fanavaran insurance clients",
    description:
      "Returns configured Fanavaran tenants (parsian, tejaratno, moallem) and which client is active for this deployment.",
  })
  listClients() {
    const activeClient = resolveFanavaranClientKey();
    return {
      activeClient,
      clients: listFanavaranClientProfiles().map((profile) => ({
        key: profile.key,
        defaults: profile.defaults,
        isActive: profile.key === activeClient,
      })),
    };
  }

  @Get(":client/claim-cases/:claimCaseId/base-claim/preview")
  @ApiOperation({
    summary: "Preview Fanavaran base claim create payload",
    description:
      "GET has no request body. Always rebuilds GEN.03 from live policy + VIN/vehicle inquiries. Does not reuse fanavaranSync lastPayload / PolicyId / UsedId cache. Auth token is still shared until Asia/Tehran midnight.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  @ApiQuery({
    name: "debug",
    required: false,
    description: "When true, returns payload plus mapping debug steps",
  })
  @ApiQuery({
    name: "forceRefreshPolicy",
    required: false,
    deprecated: true,
    description: "Ignored. Preview always re-inquires PolicyId.",
  })
  @ApiQuery({
    name: "resolvePolicy",
    required: false,
    deprecated: true,
    description: "Ignored. Preview always re-inquires PolicyId.",
  })
  async preview(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
    @Query("debug") debug?: string,
    @Query("forceRefreshPolicy") _forceRefreshPolicy?: string,
    @Query("resolvePolicy") _resolvePolicy?: string,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.previewFanavaranSubmitV2(
      claimCaseId,
      clientKey,
      {
        debug: debug === "1" || debug === "true",
        forceRefreshPolicy: true,
        forceRefreshUsedId: true,
        requirePolicyId: false,
      },
    );
  }

  @Post(":client/claim-cases/:claimCaseId/base-claim/submit")
  @ApiOperation({
    summary: "Submit Fanavaran base claim create request",
    description:
      "Swagger JSON body is optional. Always rebuilds GEN.03 from live inquiries, then POSTs that rebuilt payload. Pasting a previous preview JSON does not skip inquiry. Only user-entry keys are applied from the body (EstimateAmount, licence, dates, address, police report). PolicyId and AccidentVehicleUsedId in pasted JSON are ignored.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  @ApiBody({
    required: false,
    description:
      "Optional. Paste previous preview JSON if you want to tweak user-entry fields. Lookup ids in that JSON are ignored.",
    schema: { type: "object", additionalProperties: true, example: {} },
  })
  async submit(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
    @Body() body?: Record<string, unknown>,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.submitFanavaranV2(
      claimCaseId,
      clientKey,
      body && Object.keys(body).length > 0 ? body : undefined,
    );
  }

  @Get(":client/claim-cases/:claimCaseId/damage-case/preview")
  @ApiOperation({
    summary: "Preview Fanavaran damage-case payload",
    description:
      "GET has no request body. Always rebuilds GEN.12 from live VIN/vehicle/driver inquiries. Does not reuse lastPayload / plaqueKindId / DriverId cache.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  async previewDamageCase(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.previewFanavaranDamageCaseV2(
      claimCaseId,
      clientKey,
    );
  }

  @Post(":client/claim-cases/:claimCaseId/damage-case/submit")
  @ApiOperation({
    summary: "Submit Fanavaran damage-case request",
    description:
      "Swagger JSON body is optional. Always rebuilds GEN.12 from live VIN/vehicle/driver inquiries, then POSTs that rebuilt payload. Pasting a previous preview JSON does not skip inquiry. Only Desc, EstimateAmount, LicenceNo, LicenceIssuDate, DriverIsOwner are taken from the body. PlaqueKindId, PlaqueSampleId, VehicleKindId, DriverId, InsuranceCorpId in pasted JSON are ignored.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  @ApiBody({
    required: false,
    description:
      "Optional. Paste previous preview JSON if you want to tweak Desc / licence / estimate. Lookup-filter ids in that JSON are ignored.",
    schema: { type: "object", additionalProperties: true, example: {} },
  })
  async submitDamageCase(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
    @Body() body?: Record<string, unknown>,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.submitFanavaranDamageCaseV2(
      claimCaseId,
      clientKey,
      body && Object.keys(body).length > 0 ? body : undefined,
    );
  }

  @Get(":client/claim-cases/:claimCaseId/attachments/preview")
  @ApiOperation({
    summary: "Preview Fanavaran attachment upload plan",
    description:
      "Lists local required-document and captured damage images that would be sent to GEN.07. Shows which images are already recorded as uploaded to Fanavaran.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  async previewAttachments(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.previewFanavaranAttachmentsV2(
      claimCaseId,
      clientKey,
    );
  }

  @Post(":client/claim-cases/:claimCaseId/attachments/submit")
  @ApiOperation({
    summary: "Submit missing Fanavaran attachments",
    description:
      "Uploads every local image that does not already have a recorded successful GEN.07 Fanavaran file upload. Uses one multipart request per image.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  async submitAttachments(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.submitFanavaranAttachmentsV2(
      claimCaseId,
      clientKey,
    );
  }

  @Get(":client/claim-cases/:claimCaseId/expertise/preview")
  @ApiOperation({
    summary: "Preview Fanavaran expertise payload",
    description:
      "GET has no request body. Rebuilds GEN.08 from the active expert reply and lookups on every call. Does not reuse lastPayload cache.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  async previewExpertise(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.previewFanavaranExpertiseV2(
      claimCaseId,
      clientKey,
    );
  }

  @Post(":client/claim-cases/:claimCaseId/expertise/submit")
  @ApiOperation({
    summary: "Submit Fanavaran expertise request",
    description:
      "Swagger JSON body is optional. Always rebuilds GEN.08 from the local expert reply and lookups, then POSTs that rebuilt payload. Pasting a previous preview JSON does not skip rebuild. Only money/date fields are taken from the body. DmgCaseId, ClaimExpertId, and DmgSections in pasted JSON are ignored.",
  })
  @ApiParam({
    name: "client",
    description: "Fanavaran tenant key",
    enum: FANAVARAN_CLIENT_SWAGGER_ENUM,
  })
  @ApiParam({
    name: "claimCaseId",
    description: "Claim case MongoDB ObjectId",
  })
  @ApiBody({
    required: false,
    description:
      "Optional. Paste previous preview JSON if you want to tweak money/date fields. DmgCaseId / ClaimExpertId / DmgSections in that JSON are ignored.",
    schema: { type: "object", additionalProperties: true, example: {} },
  })
  async submitExpertise(
    @Param("client") client: string,
    @Param("claimCaseId") claimCaseId: string,
    @Body() body?: Record<string, unknown>,
  ) {
    const clientKey = this.parseClientParam(client);
    return await this.claimRequestManagementService.submitFanavaranExpertiseV2(
      claimCaseId,
      clientKey,
      body && Object.keys(body).length > 0 ? body : undefined,
    );
  }

  private parseClientParam(client: string) {
    if (!isFanavaranClientKey(client)) {
      throw new BadRequestException(
        `Invalid Fanavaran client "${client}". Expected one of: ${FANAVARAN_CLIENT_KEYS.join(", ")}`,
      );
    }
    return normalizeFanavaranClientKey(client);
  }
}