import { Prop, Schema, SchemaFactory } from "@nestjs/mongoose";
import { HydratedDocument, Schema as MongooseSchema, Types } from "mongoose";
import { ClaimRequiredDocumentType } from "src/Types&Enums/claim-request-management/required-document-type.enum";
import { ClaimStatus } from "src/Types&Enums/claim-request-management/claimStatus.enum";
import { ClaimCaseStatus } from "src/Types&Enums/claim-request-management/claim-case-status.enum";
import {
  HistoryEvent,
  HistoryEventSchema,
} from "src/request-management/entities/schema/historyEvent.type";
import {
  ClaimDamageSelection,
  ClaimDamageSelectionSchema,
} from "./claim-case.damage.schema";
import {
  ClaimMoney,
  ClaimMoneySchema,
  ClaimOwner,
  ClaimOwnerSchema,
  ClaimVehicleSnapshot,
  ClaimVehicleSnapshotSchema,
} from "./claim-case.identity.schema";
import { ClaimMedia, ClaimMediaSchema } from "./claim-case.media.schema";
import {
  ClaimEvaluation,
  ClaimEvaluationSchema,
} from "./claim-case.evaluation.schema";
import {
  ClaimCaseSnapshot,
  ClaimCaseSnapshotSchema,
} from "./claim-case.snapshot.schema";
import {
  ClaimWorkflow,
  ClaimWorkflowSchema,
} from "./claim-case.workflow.schema";
import { UserClaimRating } from "./claim-request-management.schema";
import {
  CaseInquiries,
  CaseInquiriesSchema,
} from "src/common/schema/case-inquiries.schema";

@Schema({ _id: false })
export class RequiredDocumentRef {
  @Prop({ type: Types.ObjectId })
  fileId?: Types.ObjectId;

  @Prop({ type: String })
  filePath?: string;

  @Prop({ type: String })
  fileName?: string;

  @Prop({ type: Boolean, default: true })
  uploaded?: boolean;

  @Prop({ type: Date })
  uploadedAt?: Date;
}
export const RequiredDocumentRefSchema =
  SchemaFactory.createForClass(RequiredDocumentRef);

@Schema({ _id: false })
export class FanavaranSyncStage {
  @Prop({ type: String })
  status?: "pending" | "success" | "failed" | "skipped";

  @Prop({ type: Date })
  lastTriedAt?: Date;

  @Prop({ type: String })
  lastError?: string;

  @Prop({ type: Number })
  claimId?: number;

  @Prop({ type: Number })
  claimNo?: number;

  @Prop({ type: Number })
  dmgCaseId?: number;

  @Prop({ type: Number })
  expertiseId?: number;

  @Prop({ type: [MongooseSchema.Types.Mixed], default: [] })
  files?: unknown[];

  @Prop({ type: MongooseSchema.Types.Mixed })
  response?: unknown;
}
export const FanavaranSyncStageSchema =
  SchemaFactory.createForClass(FanavaranSyncStage);

@Schema({ _id: false })
export class FanavaranSyncState {
  @Prop({ type: FanavaranSyncStageSchema })
  baseClaim?: FanavaranSyncStage;

  @Prop({ type: FanavaranSyncStageSchema })
  damageCase?: FanavaranSyncStage;

  @Prop({ type: FanavaranSyncStageSchema })
  attachments?: FanavaranSyncStage;

  @Prop({ type: FanavaranSyncStageSchema })
  expertise?: FanavaranSyncStage;
}
export const FanavaranSyncStateSchema =
  SchemaFactory.createForClass(FanavaranSyncState);

@Schema({
  collection: "claimCases",
  timestamps: true,
  id: true,
  versionKey: false,
})
export class ClaimCase {
  @Prop({ required: true, unique: true, index: true, trim: true })
  requestNo: string;

  /**
   * Human-friendly shared id across blame+claim (e.g. A14235).
   * Generated once on blame creation and copied into claim.
   */
  @Prop({ required: true, unique: true, index: true, trim: true })
  publicId: string;

  /**
   * Overall case status (user flow + expert flow progression)
   */
  @Prop({
    required: true,
    type: String,
    enum: ClaimCaseStatus,
    default: ClaimCaseStatus.CREATED,
  })
  status: ClaimCaseStatus;

  /**
   * Claim damage determination status (expert assessment)
   */
  @Prop({ type: String, enum: ClaimStatus, default: ClaimStatus.PENDING })
  claimStatus: ClaimStatus;

  /**
   * Set while the linked blame file is in WAITING_FOR_DOCUMENT_RESEND so the claim flow can block or message the user.
   */
  @Prop({ default: false })
  blameDocumentResendPending?: boolean;

  /**
   * Link to the blame case that originated this claim.
   * IMPORTANT: this is intentionally ONLY an id reference (no embedded blame file).
   */
  @Prop({ type: Types.ObjectId, index: true })
  blameRequestId?: Types.ObjectId;

  @Prop({ type: String, index: true })
  blameRequestNo?: string;

  /**
   * Set when this claim was created by a field expert on behalf of the damaged
   * party (expert-initiated IN_PERSON flow). Used to scope the expert's panel
   * access to only their own initiated files.
   */
  @Prop({ type: Types.ObjectId, index: true })
  initiatedByFieldExpertId?: Types.ObjectId;

  /**
   * The damaged party's userId, resolved from the blame at claim-creation time.
   * Stored here so view/list access does not require an extra blame lookup.
   * For CAR_BODY this is the FIRST party; for THIRD_PARTY it is the non-guilty party.
   */
  @Prop({ type: Types.ObjectId, index: true })
  damagedPartyUserId?: Types.ObjectId;

  @Prop({ type: ClaimWorkflowSchema, default: () => ({}) })
  workflow?: ClaimWorkflow;

  @Prop({ type: ClaimOwnerSchema, default: () => ({}) })
  owner?: ClaimOwner;

  @Prop({ type: ClaimVehicleSnapshotSchema, default: () => ({}) })
  vehicle?: ClaimVehicleSnapshot;

  @Prop({ type: ClaimMoneySchema })
  money?: ClaimMoney;

  @Prop({ type: Number })
  claimNo?: number;

  @Prop({ type: Number })
  claimId?: number;

  @Prop({ type: Number })
  dmgCaseId?: number;

  @Prop({ type: Number })
  expertiseId?: number;

  @Prop({ type: FanavaranSyncStateSchema, default: () => ({}) })
  fanavaranSync?: FanavaranSyncState;

  @Prop({ type: ClaimDamageSelectionSchema, default: () => ({}) })
  damage?: ClaimDamageSelection;

  @Prop({ type: ClaimMediaSchema, default: () => ({}) })
  media?: ClaimMedia;

  @Prop({ type: ClaimEvaluationSchema, default: () => ({}) })
  evaluation?: ClaimEvaluation;

  @Prop({ type: CaseInquiriesSchema, default: () => ({}) })
  inquiries?: CaseInquiries;

  /**
   * Optional “read-optimized” copy of fields from blame/request side.
   * Source of truth remains `blameRequestId`.
   */
  @Prop({ type: ClaimCaseSnapshotSchema })
  snapshot?: ClaimCaseSnapshot;

  /**
   * For quick “has user uploaded X?” checks. Values point to docs in the
   * `claim-required-documents` collection.
   */
  @Prop({
    type: Map,
    of: RequiredDocumentRefSchema,
    default: () => ({}),
  })
  requiredDocuments?: Map<string, RequiredDocumentRef>;

  @Prop({ type: [HistoryEventSchema], default: [] })
  history?: HistoryEvent[];

  /**
   * User satisfaction rating (damaged party), after the case is completed.
   */
  @Prop({ type: UserClaimRating, required: false })
  userRating?: UserClaimRating;

  @Prop({ type: Types.ObjectId, index: true })
  createdByRegistrarId?: Types.ObjectId;

  /**
   * Legacy fields kept optional to simplify progressive migration.
   * If you choose to migrate later, we can remove these.
   */
  @Prop({ type: MongooseSchema.Types.Mixed })
  legacy?: any;
}

export type ClaimCaseDocument = HydratedDocument<ClaimCase>;
export const ClaimCaseSchema = SchemaFactory.createForClass(ClaimCase);
ClaimCaseSchema.index({ status: 1, "workflow.locked": 1 });