import { Body, Controller, Get, Param, Patch, Put, UseGuards } from "@nestjs/common";
import {
  ApiBearerAuth,
  ApiBody,
  ApiOperation,
  ApiParam,
  ApiPropertyOptional,
  ApiTags,
} from "@nestjs/swagger";
import { IsOptional, IsString } from "class-validator";
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 { RoleEnum } from "src/Types&Enums/role.enum";
import { ExpertClaimService } from "./expert-claim.service";
import { SubmitExpertReplyV2Dto } from "./dto/expert-claim-v2.dto";
import { UpdateClaimDamagedPartsV2Dto } from "./dto/update-claim-damaged-parts-v2.dto";

class InPersonVisitV2Dto {
  @ApiPropertyOptional({ example: 'Paint damage requires physical inspection' })
  @IsOptional()
  @IsString()
  note?: string;
}

@ApiTags("expert-claim-panel (v2)")
@Controller("v2/expert-claim")
@ApiBearerAuth()
@UseGuards(LocalActorAuthGuard, RolesGuard)
@Roles(RoleEnum.DAMAGE_EXPERT)
export class ExpertClaimV2Controller {
  constructor(private readonly expertClaimService: ExpertClaimService) {}

  @Get("requests")
  @ApiOperation({
    summary: "List available claim requests for damage expert",
    description:
      "Returns claims that are WAITING_FOR_DAMAGE_EXPERT and not locked by another expert, plus this expert's own locked/in-progress claims.",
  })
  async getClaimListV2(@CurrentUser() actor) {
    return await this.expertClaimService.getClaimListV2(actor);
  }

  @Get("request/:claimRequestId")
  @ApiOperation({
    summary: "Get claim request detail for damage expert",
    description:
      "Returns full claim details including captured images, required documents status, and damage selections. Claim must have status WAITING_FOR_DAMAGE_EXPERT. If locked, only the locking expert can access it.",
  })
  @ApiParam({ name: "claimRequestId" })
  async getClaimDetailV2(
    @Param("claimRequestId") claimRequestId: string,
    @CurrentUser() actor,
  ) {
    return await this.expertClaimService.getClaimDetailV2(claimRequestId, actor);
  }

  @Put("lock/:claimRequestId")
  @ApiOperation({
    summary: "Lock a claim request for review",
    description:
      "Claim must have status WAITING_FOR_DAMAGE_EXPERT. Locking sets status to EXPERT_REVIEWING and claimStatus to UNDER_REVIEW. Only one expert can lock a claim at a time.",
  })
  @ApiParam({ name: "claimRequestId" })
  async lockClaimRequestV2(
    @Param("claimRequestId") claimRequestId: string,
    @CurrentUser() actor,
  ) {
    return await this.expertClaimService.lockClaimRequestV2(claimRequestId, actor);
  }

  @Put("reply/submit/:claimRequestId")
  @ApiOperation({
    summary: "Submit expert damage assessment reply",
    description:
      "Claim must be locked by this expert (status EXPERT_REVIEWING). Submitting unlocks the claim. If any part has factorNeeded=true the claim moves to EXPERT_COST_EVALUATION; otherwise moves to INSURER_REVIEW. Total payment cap is 30,000,000.",
  })
  @ApiParam({ name: "claimRequestId" })
  @ApiBody({ type: SubmitExpertReplyV2Dto })
  async submitExpertReplyV2(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: SubmitExpertReplyV2Dto,
    @CurrentUser() actor,
  ) {
    return await this.expertClaimService.submitExpertReplyV2(claimRequestId, body, actor);
  }

  @Patch(":claimRequestId/visit")
  @ApiOperation({
    summary: "Request in-person visit for claim",
    description:
      "Expert decides the user must come in person. Claim must be locked by this expert. Sets claimStatus to NEEDS_REVISION and unlocks the claim so the user is informed.",
  })
  @ApiParam({ name: "claimRequestId" })
  @ApiBody({ type: InPersonVisitV2Dto, required: false })
  async requestInPersonVisitV2(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: InPersonVisitV2Dto,
    @CurrentUser() actor,
  ) {
    return await this.expertClaimService.requestInPersonVisitV2(
      claimRequestId,
      actor,
      body?.note,
    );
  }

  @Patch("request/:claimRequestId/damaged-parts")
  @ApiOperation({
    summary: "Edit selected damaged parts (V2)",
    description:
      "Damage expert can modify selected damaged parts while claim is in EXPERT_REVIEWING and locked by the same expert.",
  })
  @ApiParam({ name: "claimRequestId" })
  @ApiBody({ type: UpdateClaimDamagedPartsV2Dto })
  async updateClaimDamagedPartsV2(
    @Param("claimRequestId") claimRequestId: string,
    @Body() body: UpdateClaimDamagedPartsV2Dto,
    @CurrentUser() actor,
  ) {
    return await this.expertClaimService.updateClaimDamagedPartsV2(
      claimRequestId,
      body,
      actor,
    );
  }
}