import type {
  ExportMemberPointMallRecordQuery,
  MemberPointMallProductDto,
  MemberPointMallRecordListQuery,
  SaveMemberPointMallProductPayload,
  SaveMemberPointMallRulePayload,
} from '#/api/member/points-mall';
import type {
  PointMallProductEditorForm,
  PointMallRecordFilterForm,
  PointMallRuleForm,
} from '#/views/member/points-mall/types';

import {
  createDefaultPointMallProductEditorForm,
  createDefaultPointMallRuleForm,
} from '#/views/member/points-mall/types';

/** 数量格式化。 */
export function formatInteger(value: null | number | undefined) {
  const num = Number(value ?? 0);
  if (!Number.isFinite(num)) {
    return '0';
  }
  return Math.round(num).toLocaleString('zh-CN');
}

/** 积分格式化。 */
export function formatPoints(value: null | number | undefined) {
  return formatInteger(value);
}

/** 金额格式化。 */
export function formatCurrency(value: null | number | undefined) {
  const amount = Number(value ?? 0);
  if (Number.isNaN(amount)) {
    return '¥0.00';
  }
  return `¥${amount.toFixed(2)}`;
}

/** 判断字符串是否为空。 */
export function isBlank(value: string | undefined) {
  return !value || value.trim().length === 0;
}

/** 规则 DTO -> 表单。 */
export function mapRuleToForm(
  rule: SaveMemberPointMallRulePayload,
): PointMallRuleForm {
  return {
    isConsumeRewardEnabled: Boolean(rule.isConsumeRewardEnabled),
    consumeAmountPerStep: Number(rule.consumeAmountPerStep),
    consumeRewardPointsPerStep: Number(rule.consumeRewardPointsPerStep),
    isReviewRewardEnabled: Boolean(rule.isReviewRewardEnabled),
    reviewRewardPoints: Number(rule.reviewRewardPoints),
    isRegisterRewardEnabled: Boolean(rule.isRegisterRewardEnabled),
    registerRewardPoints: Number(rule.registerRewardPoints),
    isSigninRewardEnabled: Boolean(rule.isSigninRewardEnabled),
    signinRewardPoints: Number(rule.signinRewardPoints),
    expiryMode: rule.expiryMode,
  };
}

/** 规则表单 -> 保存 DTO。 */
export function mapRuleFormToSavePayload(
  form: PointMallRuleForm,
  storeId: string,
): SaveMemberPointMallRulePayload {
  return {
    storeId,
    isConsumeRewardEnabled: form.isConsumeRewardEnabled,
    consumeAmountPerStep: Number(form.consumeAmountPerStep ?? 0),
    consumeRewardPointsPerStep: Number(form.consumeRewardPointsPerStep ?? 0),
    isReviewRewardEnabled: form.isReviewRewardEnabled,
    reviewRewardPoints: Number(form.reviewRewardPoints ?? 0),
    isRegisterRewardEnabled: form.isRegisterRewardEnabled,
    registerRewardPoints: Number(form.registerRewardPoints ?? 0),
    isSigninRewardEnabled: form.isSigninRewardEnabled,
    signinRewardPoints: Number(form.signinRewardPoints ?? 0),
    expiryMode: form.expiryMode,
  };
}

/** 重置规则表单。 */
export function resetRuleForm(form: PointMallRuleForm) {
  const defaults = createDefaultPointMallRuleForm();
  form.isConsumeRewardEnabled = defaults.isConsumeRewardEnabled;
  form.consumeAmountPerStep = defaults.consumeAmountPerStep;
  form.consumeRewardPointsPerStep = defaults.consumeRewardPointsPerStep;
  form.isReviewRewardEnabled = defaults.isReviewRewardEnabled;
  form.reviewRewardPoints = defaults.reviewRewardPoints;
  form.isRegisterRewardEnabled = defaults.isRegisterRewardEnabled;
  form.registerRewardPoints = defaults.registerRewardPoints;
  form.isSigninRewardEnabled = defaults.isSigninRewardEnabled;
  form.signinRewardPoints = defaults.signinRewardPoints;
  form.expiryMode = defaults.expiryMode;
}

/** 商品 DTO -> 编辑表单。 */
export function mapProductToEditorForm(
  source: MemberPointMallProductDto,
): PointMallProductEditorForm {
  return {
    pointMallProductId: source.pointMallProductId,
    redeemType: source.redeemType,
    productId: source.productId ?? '',
    productName: '',
    couponTemplateId: source.couponTemplateId ?? '',
    couponTemplateName: '',
    physicalName: source.physicalName ?? '',
    pickupMethod: source.pickupMethod ?? 'store_pickup',
    name: source.name,
    imageUrl: source.imageUrl ?? '',
    exchangeType: source.exchangeType,
    requiredPoints: source.requiredPoints,
    cashAmount: source.exchangeType === 'mixed' ? source.cashAmount : null,
    stockTotal: source.stockTotal,
    perMemberLimit: source.perMemberLimit ?? null,
    description: source.description ?? '',
    notifyChannels: [...source.notifyChannels],
    status: source.status,
  };
}

/** 商品表单 -> 保存 DTO。 */
export function mapProductEditorFormToSavePayload(
  form: PointMallProductEditorForm,
  storeId: string,
): SaveMemberPointMallProductPayload {
  return {
    storeId,
    pointMallProductId: form.pointMallProductId || undefined,
    name: form.name.trim(),
    imageUrl: form.imageUrl.trim() || undefined,
    redeemType: form.redeemType,
    productId: form.productId || undefined,
    couponTemplateId: form.couponTemplateId || undefined,
    physicalName: form.physicalName.trim() || undefined,
    pickupMethod:
      form.redeemType === 'physical' ? form.pickupMethod : undefined,
    description: form.description.trim() || undefined,
    exchangeType: form.exchangeType,
    requiredPoints: Number(form.requiredPoints ?? 0),
    cashAmount: Number(form.cashAmount ?? 0),
    stockTotal: Number(form.stockTotal ?? 0),
    perMemberLimit:
      form.perMemberLimit && form.perMemberLimit > 0
        ? Number(form.perMemberLimit)
        : undefined,
    notifyChannels: [...form.notifyChannels],
    status: form.status,
  };
}

/** 重置商品编辑表单。 */
export function resetProductEditorForm(form: PointMallProductEditorForm) {
  const defaults = createDefaultPointMallProductEditorForm();
  form.pointMallProductId = defaults.pointMallProductId;
  form.redeemType = defaults.redeemType;
  form.productId = defaults.productId;
  form.productName = defaults.productName;
  form.couponTemplateId = defaults.couponTemplateId;
  form.couponTemplateName = defaults.couponTemplateName;
  form.physicalName = defaults.physicalName;
  form.pickupMethod = defaults.pickupMethod;
  form.name = defaults.name;
  form.imageUrl = defaults.imageUrl;
  form.exchangeType = defaults.exchangeType;
  form.requiredPoints = defaults.requiredPoints;
  form.cashAmount = defaults.cashAmount;
  form.stockTotal = defaults.stockTotal;
  form.perMemberLimit = defaults.perMemberLimit;
  form.description = defaults.description;
  form.notifyChannels = [...defaults.notifyChannels];
  form.status = defaults.status;
}

/** 记录筛选项映射。 */
export function mapRecordFilterToQuery(
  filterForm: PointMallRecordFilterForm,
): Pick<
  ExportMemberPointMallRecordQuery & MemberPointMallRecordListQuery,
  'endDate' | 'keyword' | 'redeemType' | 'startDate' | 'status'
> {
  const query: Pick<
    ExportMemberPointMallRecordQuery & MemberPointMallRecordListQuery,
    'endDate' | 'keyword' | 'redeemType' | 'startDate' | 'status'
  > = {};

  if (filterForm.redeemType) {
    query.redeemType = filterForm.redeemType;
  }

  if (filterForm.status) {
    query.status = filterForm.status;
  }

  const keyword = filterForm.keyword.trim();
  if (keyword) {
    query.keyword = keyword;
  }

  if (filterForm.dateRange && filterForm.dateRange.length === 2) {
    query.startDate = filterForm.dateRange[0].format('YYYY-MM-DD');
    query.endDate = filterForm.dateRange[1].format('YYYY-MM-DD');
  }

  return query;
}

/** base64 下载。 */
export function downloadBase64File(
  fileName: string,
  fileContentBase64: string,
) {
  const binary = atob(fileContentBase64);
  const length = binary.length;
  const bytes = new Uint8Array(length);

  for (let index = 0; index < length; index++) {
    bytes[index] = binary.codePointAt(index) ?? 0;
  }

  const blob = new Blob([bytes], { type: 'text/csv;charset=utf-8;' });
  const url = URL.createObjectURL(blob);
  const anchor = document.createElement('a');
  anchor.href = url;
  anchor.download = fileName;
  document.body.append(anchor);
  anchor.click();
  anchor.remove();
  URL.revokeObjectURL(url);
}