/**
 * OmniCard AI (CRMmp) - 名片主极速编辑业务驱动层
 * 拉名片详情，仅提交已填字段，不做 Bento 搭建
 */

import { CardProfile } from '../../../common/types.uts';
import { fetchOwnerCardInfo, updateOwnerCard } from '../../../common/api.uts';
import { getCurrentLocale, getOmniText } from '../../../common/locale.uts';

export type CardEditCopyKey =
  | 'heading'
  | 'name'
  | 'jobTitle'
  | 'company'
  | 'phone'
  | 'email'
  | 'whatsapp'
  | 'linkedin'
  | 'save'
  | 'loading'
  | 'success'
  | 'error'
  | 'empty'
  | 'missingId'
  | 'back'
  | 'avatarUpload'
  | 'avatarChange'
  | 'avatarPlaceholder';

export type CardEditForm = {
  id?: string | number | null;
  name?: string;
  title?: string;
  company?: string;
  slogan?: string;
  avatarUrl?: string;
  phone?: string;
  email?: string;
  whatsapp?: string;
  linkedin?: string;
  telegram?: string;
  twitter?: string;
  wechat?: string;
};

export type CardUpdatePayload = {
  id: string | number;
  name?: string;
  title?: string;
  company?: string;
  slogan?: string;
  avatarUrl?: string;
  phone?: string;
  email?: string;
  whatsapp?: string;
  linkedin?: string;
  telegram?: string;
  twitter?: string;
  wechat?: string;
};

export type LoadCardApi = {
  fetchOwnerCardInfo?: (id: string | number) => Promise<CardProfile>;
};

export type LoadCardResult = {
  card: CardProfile | null;
  empty: boolean;
  errorMessage: string;
};

export type SaveCardApi = {
  updateOwnerCard?: (
    payload: CardProfile & { id: string | number }
  ) => Promise<CardProfile>;
};

export type SaveCardResult = {
  ok: boolean;
  card: CardProfile | null;
  errorMessage: string;
};

export type CardEditPageOptions = {
  id?: string;
};

export type CardEditState = {
  rawId: string;
  cardId: number | null;
  name: string;
  title: string;
  company: string;
  avatarUrl: string;
  phone: string;
  email: string;
  whatsapp: string;
  linkedin: string;
  loading: boolean;
  saving: boolean;
  empty: boolean;
  missingId: boolean;
  errorMessage: string;
};

function isZhLocale(): boolean {
  return getCurrentLocale() === 'zh-CN';
}

/**
 * 页面文案：保存 / 社交走词典，字段标签走本地词典
 */
export function resolveCardEditText(key: CardEditCopyKey): string {
  const locale = getCurrentLocale();
  if (key === 'save') {
    return getOmniText(locale, 'common.save');
  }
  if (key === 'loading') {
    return getOmniText(locale, 'common.loading');
  }
  if (key === 'success') {
    return getOmniText(locale, 'common.success');
  }
  if (key === 'error') {
    return getOmniText(locale, 'common.error');
  }
  if (key === 'empty') {
    return getOmniText(locale, 'common.empty');
  }
  if (key === 'whatsapp') {
    return getOmniText(locale, 'portal.whatsapp');
  }
  if (key === 'linkedin') {
    return getOmniText(locale, 'portal.linkedin');
  }

  const zh = isZhLocale();
  if (key === 'heading') {
    return zh ? '极速编辑' : 'Quick edit';
  }
  if (key === 'name') {
    return zh ? '姓名' : 'Name';
  }
  if (key === 'jobTitle') {
    return zh ? '头衔' : 'Title';
  }
  if (key === 'company') {
    return zh ? '公司' : 'Company';
  }
  if (key === 'phone') {
    return zh ? '电话' : 'Phone';
  }
  if (key === 'email') {
    return zh ? '邮箱' : 'Email';
  }
  if (key === 'missingId') {
    return zh ? '缺少名片编号' : 'Card ID is missing';
  }
  if (key === 'back') {
    return zh ? '返回名片' : 'Back to card';
  }
  if (key === 'avatarUpload') {
    return zh ? '点击拍照/上传' : 'Upload photo';
  }
  if (key === 'avatarChange') {
    return zh ? '更换头像' : 'Change avatar';
  }
  if (key === 'avatarPlaceholder') {
    return zh ? '上传头像' : 'Upload avatar';
  }
  return '';
}

/**
 * 解析为正整数。非正整数返回 null
 */
export function parseCardId(
  raw: string | number | null | undefined
): number | null {
  if (raw == null) {
    return null;
  }
  if (typeof raw === 'number') {
    if (raw <= 0) {
      return null;
    }
    if (Math.floor(raw) !== raw) {
      return null;
    }
    return raw;
  }
  const text = String(raw).trim();
  if (text === '') {
    return null;
  }
  if (!/^[1-9]\d*$/.test(text)) {
    return null;
  }
  return Number(text);
}

function pickFilled(value: string | null | undefined): string | null {
  if (value == null) {
    return null;
  }
  const text = String(value).trim();
  if (text === '') {
    return null;
  }
  return text;
}

function assignFilled(
  payload: CardUpdatePayload,
  key:
    | 'name'
    | 'title'
    | 'company'
    | 'slogan'
    | 'avatarUrl'
    | 'phone'
    | 'email'
    | 'whatsapp'
    | 'linkedin'
    | 'telegram'
    | 'twitter'
    | 'wechat',
  value: string | null | undefined
): void {
  const filled = pickFilled(value);
  if (filled != null) {
    payload[key] = filled;
  }
}

/**
 * 只带已填字段与解析后的 id。缺 id 返回 null
 */
export function buildUpdatePayload(form: CardEditForm): CardUpdatePayload | null {
  const id = parseCardId(form.id);
  if (id == null) {
    return null;
  }
  const payload: CardUpdatePayload = { id };
  assignFilled(payload, 'name', form.name);
  assignFilled(payload, 'title', form.title);
  assignFilled(payload, 'company', form.company);
  assignFilled(payload, 'slogan', form.slogan);
  assignFilled(payload, 'avatarUrl', form.avatarUrl);
  assignFilled(payload, 'phone', form.phone);
  assignFilled(payload, 'email', form.email);
  assignFilled(payload, 'whatsapp', form.whatsapp);
  assignFilled(payload, 'linkedin', form.linkedin);
  assignFilled(payload, 'telegram', form.telegram);
  assignFilled(payload, 'twitter', form.twitter);
  assignFilled(payload, 'wechat', form.wechat);
  return payload;
}

function readErrorMessage(err: unknown): string {
  if (err instanceof Error && err.message !== '') {
    return err.message;
  }
  return resolveCardEditText('error');
}

function asUpdatePayload(
  payload: CardUpdatePayload
): CardProfile & { id: string | number } {
  return payload as CardProfile & { id: string | number };
}

/**
 * 拉取名片详情。可注入 fetchOwnerCardInfo。缺 id 不请求
 */
export async function loadCard(
  id: string | number | null | undefined,
  api?: LoadCardApi
): Promise<LoadCardResult> {
  const cardId = parseCardId(id);
  if (cardId == null) {
    return {
      card: null,
      empty: true,
      errorMessage: '',
    };
  }

  const fetchInfo =
    api != null && api.fetchOwnerCardInfo != null
      ? api.fetchOwnerCardInfo
      : fetchOwnerCardInfo;

  try {
    const card = await fetchInfo(cardId);
    return {
      card,
      empty: false,
      errorMessage: '',
    };
  } catch (err) {
    return {
      card: null,
      empty: true,
      errorMessage: readErrorMessage(err),
    };
  }
}

/**
 * 保存名片。可注入 updateOwnerCard。缺 id 不请求
 */
export async function saveCard(
  form: CardEditForm,
  api?: SaveCardApi
): Promise<SaveCardResult> {
  const payload = buildUpdatePayload(form);
  if (payload == null) {
    return {
      ok: false,
      card: null,
      errorMessage: '',
    };
  }

  const update =
    api != null && api.updateOwnerCard != null
      ? api.updateOwnerCard
      : updateOwnerCard;

  try {
    const card = await update(asUpdatePayload(payload));
    return {
      ok: true,
      card,
      errorMessage: '',
    };
  } catch (err) {
    return {
      ok: false,
      card: null,
      errorMessage: readErrorMessage(err),
    };
  }
}

export function createCardEditState(): CardEditState {
  return {
    rawId: '',
    cardId: null,
    name: '',
    title: '',
    company: '',
    avatarUrl: '',
    phone: '',
    email: '',
    whatsapp: '',
    linkedin: '',
    loading: false,
    saving: false,
    empty: false,
    missingId: false,
    errorMessage: '',
  };
}

export function applyCardEditOptions(
  state: CardEditState,
  options: CardEditPageOptions | null
): boolean {
  if (options == null || options.id == null) {
    state.rawId = '';
    state.cardId = null;
    state.missingId = true;
    state.empty = true;
    return false;
  }
  const parsed = parseCardId(options.id);
  state.rawId = String(options.id).trim();
  state.cardId = parsed;
  state.missingId = parsed == null;
  state.empty = parsed == null;
  return parsed != null;
}

function readOptionalText(value: string | null | undefined): string {
  if (value == null) {
    return '';
  }
  return String(value);
}

function applyCardToState(state: CardEditState, card: CardProfile): void {
  if (card.id != null) {
    const parsed = parseCardId(card.id);
    if (parsed != null) {
      state.cardId = parsed;
    }
  }
  state.name = card.name != null ? String(card.name) : '';
  state.title = readOptionalText(card.title);
  state.company = readOptionalText(card.company);
  state.avatarUrl = readOptionalText(card.avatarUrl);
  state.phone = readOptionalText(card.phone);
  state.email = readOptionalText(card.email);
  state.whatsapp = readOptionalText(card.whatsapp);
  state.linkedin = readOptionalText(card.linkedin);
}

export function applyLoadResult(
  state: CardEditState,
  result: LoadCardResult
): void {
  if (result.card != null) {
    applyCardToState(state, result.card);
    state.empty = false;
    state.missingId = false;
  } else {
    state.empty = true;
  }
  state.errorMessage = result.errorMessage;
}

export function formFromState(state: CardEditState): CardEditForm {
  return {
    id: state.cardId,
    name: state.name,
    title: state.title,
    company: state.company,
    avatarUrl: state.avatarUrl,
    phone: state.phone,
    email: state.email,
    whatsapp: state.whatsapp,
    linkedin: state.linkedin,
  };
}

export async function refreshCardEdit(
  state: CardEditState,
  api?: LoadCardApi
): Promise<LoadCardResult> {
  if (state.missingId || state.cardId == null) {
    const skipped: LoadCardResult = {
      card: null,
      empty: true,
      errorMessage: '',
    };
    applyLoadResult(state, skipped);
    state.missingId = true;
    return skipped;
  }
  if (state.loading) {
    return {
      card: null,
      empty: state.empty,
      errorMessage: state.errorMessage,
    };
  }
  state.loading = true;
  state.errorMessage = '';
  const result = await loadCard(state.cardId, api);
  applyLoadResult(state, result);
  state.loading = false;
  return result;
}

export async function submitCardEdit(
  state: CardEditState,
  api?: SaveCardApi
): Promise<boolean> {
  if (state.cardId == null || state.saving) {
    return false;
  }
  state.saving = true;
  state.errorMessage = '';
  const result = await saveCard(formFromState(state), api);
  if (result.ok && result.card != null) {
    applyCardToState(state, result.card);
    state.saving = false;
    return true;
  }
  state.saving = false;
  state.errorMessage = result.errorMessage;
  return false;
}

export function goBackFromCardEdit(): void {
  uni.navigateBack({
    delta: 1,
    fail: () => {
      uni.switchTab({
        url: '/pages/owner/card/index',
      });
    },
  });
}