import { z } from "zod";

import { StringChangeSchema, NumberChangeSchema } from "../common/changeSchemas";
import type { DataRequirements } from "../service/EnrichmentDataStore";
import { AuditActionServiceHelper } from "./AuditActionServiceHelper";
import type {
  IAuditActionService,
  GetDisplayTitleParams,
  GetDisplayJsonParams,
  TranslationWithParams,
} from "./IAuditActionService";
/**
 * Seat Rescheduled Audit Action Service
 * Handles SEAT_RESCHEDULED action with per-action versioning
 */

// Module-level because it is passed to IAuditActionService type outside the class scope
const fieldsSchemaV1 = z.object({
  seatReferenceUid: z.string(),
  attendeeEmail: z.string(),
  startTime: NumberChangeSchema,
  endTime: NumberChangeSchema,
  rescheduledToBookingUid: StringChangeSchema,
});

export class SeatRescheduledAuditActionService implements IAuditActionService {
  readonly VERSION = 1;
  public static readonly TYPE = "SEAT_RESCHEDULED" as const;
  private static dataSchemaV1 = z.object({
    version: z.literal(1),
    fields: fieldsSchemaV1,
  });
  private static fieldsSchemaV1 = fieldsSchemaV1;
  public static readonly latestFieldsSchema = fieldsSchemaV1;
  // Union of all versions
  public static readonly storedDataSchema = SeatRescheduledAuditActionService.dataSchemaV1;
  // Union of all versions
  public static readonly storedFieldsSchema = SeatRescheduledAuditActionService.fieldsSchemaV1;
  private helper: AuditActionServiceHelper<
    typeof SeatRescheduledAuditActionService.latestFieldsSchema,
    typeof SeatRescheduledAuditActionService.storedDataSchema
  >;

  constructor() {
    this.helper = new AuditActionServiceHelper({
      latestVersion: this.VERSION,
      latestFieldsSchema: SeatRescheduledAuditActionService.latestFieldsSchema,
      storedDataSchema: SeatRescheduledAuditActionService.storedDataSchema,
    });
  }

  getVersionedData(fields: unknown) {
    return this.helper.getVersionedData(fields);
  }

  parseStored(data: unknown) {
    return this.helper.parseStored(data);
  }

  getVersion(data: unknown): number {
    return this.helper.getVersion(data);
  }

  migrateToLatest(data: unknown) {
    // V1-only: validate and return as-is (no migration needed)
    const validated = fieldsSchemaV1.parse(data);
    return { isMigrated: false, latestData: validated };
  }

  getDataRequirements(): DataRequirements {
    return { userUuids: [] };
  }

  async getDisplayTitle({ storedData, userTimeZone }: GetDisplayTitleParams): Promise<TranslationWithParams> {
    const { fields } = this.parseStored(storedData);
    const rescheduledToBookingUid = fields.rescheduledToBookingUid.new;

    // Format dates in user timezone
    const oldDate = fields.startTime.old
      ? AuditActionServiceHelper.formatDateInTimeZone(fields.startTime.old, userTimeZone)
      : "";
    const newDate = fields.startTime.new
      ? AuditActionServiceHelper.formatDateInTimeZone(fields.startTime.new, userTimeZone)
      : "";

    return {
      key: "booking_audit_action.seat_rescheduled",
      params: {
        oldDate,
        newDate,
      },
            components: rescheduledToBookingUid
              ? [{ type: "link", href: `/bookings?uid=${rescheduledToBookingUid}&activeSegment=history` }]
              : undefined,
    };
  }

  getDisplayJson({ storedData, userTimeZone }: GetDisplayJsonParams): SeatRescheduledAuditDisplayData {
    const { fields } = this.parseStored(storedData);

    return {
      seatReferenceUid: fields.seatReferenceUid,
      attendeeEmail: fields.attendeeEmail,
      previousStartTime: fields.startTime.old
        ? AuditActionServiceHelper.formatDateTimeInTimeZone(fields.startTime.old, userTimeZone)
        : null,
      newStartTime: fields.startTime.new
        ? AuditActionServiceHelper.formatDateTimeInTimeZone(fields.startTime.new, userTimeZone)
        : null,
      previousEndTime: fields.endTime.old
        ? AuditActionServiceHelper.formatDateTimeInTimeZone(fields.endTime.old, userTimeZone)
        : null,
      newEndTime: fields.endTime.new
        ? AuditActionServiceHelper.formatDateTimeInTimeZone(fields.endTime.new, userTimeZone)
        : null,
      rescheduledToBookingUid: fields.rescheduledToBookingUid.new ?? null,
    };
  }
}

export type SeatRescheduledAuditData = z.infer<typeof fieldsSchemaV1>;

export type SeatRescheduledAuditDisplayData = {
  seatReferenceUid: string;
  attendeeEmail: string;
  previousStartTime: string | null;
  newStartTime: string | null;
  previousEndTime: string | null;
  newEndTime: string | null;
  rescheduledToBookingUid: string | null;
};