import { financeApi } from "@/auth/http";
import type { LocalizedName } from "@/shared/types";

export type AssetStatus =
  | "ACTIVE"
  | "FULLY_DEPRECIATED"
  | "DISPOSED"
  | "WRITTEN_OFF";

export type AssetRow = {
  id: string;
  assetCode: string;
  name: string;
  serialNumber: string | null;
  acquisitionDate: string;
  inServiceDate: string;
  acquisitionCost: number | string;
  salvageValue: number | string;
  usefulLifeMonths: number;
  accumulatedDepreciation: number | string;
  netBookValue: number | string;
  status: AssetStatus;
  categoryCode: string;
  categoryName: LocalizedName;
  costCenterCode: string | null;
};

export type AssetCategory = {
  id: string;
  code: string;
  name: LocalizedName;
  defaultLifeMonths: number;
  defaultSalvageRate: string;
  isActive: boolean;
};

export type ScheduleRow = {
  month: number;
  amount: number;
  accumulated: number;
  netBookValue: number;
};

export type DepreciationRun = {
  id: string;
  runDate: string;
  assetCount: number;
  totalAmount: number | string;
  entryNumber: string | null;
  periodName: LocalizedName;
  periodNumber: number;
};

export type Disposal = {
  id: string;
  disposalDate: string;
  disposalType: string;
  proceeds: number | string;
  netBookValue: number | string;
  gainLoss: number | string;
  reference: string | null;
  assetCode: string;
  assetName: string;
};

export const ASSET_STATUS_COLOR: Record<AssetStatus, string> = {
  ACTIVE: "green",
  FULLY_DEPRECIATED: "blue",
  DISPOSED: "gray",
  WRITTEN_OFF: "red",
};

export const fetchAssets = async (status?: string): Promise<AssetRow[]> => {
  const { data } = await financeApi.get("/assets", {
    params: status ? { status } : undefined,
  });
  return data;
};

export const fetchAssetCategories = async (): Promise<AssetCategory[]> => {
  const { data } = await financeApi.get("/assets/categories");
  return data;
};

export const createAssetCategory = async (payload: {
  code: string;
  name: { en: string; am: string };
  assetAccountId: string;
  accumulatedAccountId: string;
  expenseAccountId: string;
  defaultLifeMonths: number;
  defaultSalvageRate?: number;
}) => {
  const { data } = await financeApi.post("/assets/categories", payload);
  return data;
};

export const createAsset = async (payload: {
  assetCategoryId: string;
  assetCode: string;
  name: string;
  acquisitionDate: string;
  inServiceDate?: string;
  acquisitionCost: number;
  salvageValue?: number;
  usefulLifeMonths?: number;
  costCenterId?: string;
  fundingAccountId?: string;
}) => {
  const { data } = await financeApi.post("/assets", payload);
  return data;
};

export const fetchSchedule = async (
  id: string,
): Promise<{
  assetCode: string;
  acquisitionCost: number;
  salvageValue: number;
  netBookValue: number;
  periodsCharged: number;
  schedule: ScheduleRow[];
}> => {
  const { data } = await financeApi.get(`/assets/${id}/schedule`);
  return data;
};

export const fetchDepreciationRuns = async (): Promise<DepreciationRun[]> => {
  const { data } = await financeApi.get("/assets/depreciation/runs");
  return data;
};

export const runDepreciation = async (fiscalPeriodId: string) => {
  const { data } = await financeApi.post("/assets/depreciation/run", {
    fiscalPeriodId,
  });
  return data;
};

export const fetchDisposals = async (): Promise<Disposal[]> => {
  const { data } = await financeApi.get("/assets/disposals");
  return data;
};

export const disposeAsset = async (
  id: string,
  payload: {
    disposalType: string;
    disposalDate: string;
    proceeds?: number;
    proceedsAccountId?: string;
    reference?: string;
  },
) => {
  const { data } = await financeApi.post(`/assets/${id}/dispose`, payload);
  return data;
};

// ── reports (4.6) ──────────────────────────────────────────────────────────

export type AccountLine = {
  accountCode: string;
  accountName: LocalizedName;
  accountType: string;
  isContra?: boolean;
};

export type TrialBalance = {
  rows: (AccountLine & { normalBalance: string; debit: number; credit: number })[];
  totalDebit: number;
  totalCredit: number;
  balanced: boolean;
  difference: number;
};

export type ProfitAndLoss = {
  dateFrom: string;
  dateTo: string;
  revenue: (AccountLine & { amount: number })[];
  expenses: (AccountLine & { amount: number })[];
  totalRevenue: number;
  totalExpenses: number;
  netResult: number;
};

export type BalanceSheet = {
  asOf: string;
  assets: (AccountLine & { balance: number })[];
  liabilities: (AccountLine & { balance: number })[];
  equity: (AccountLine & { balance: number })[];
  totalAssets: number;
  totalLiabilities: number;
  totalEquity: number;
  retainedResult: number;
  equityWithResult: number;
  balanced: boolean;
  difference: number;
};

export type CashMovement = {
  accounts: {
    accountCode: string;
    accountName: LocalizedName;
    opening: number;
    cashIn: number;
    cashOut: number;
    closing: number;
  }[];
  totalOpening: number;
  totalIn: number;
  totalOut: number;
  totalClosing: number;
};

export type GeneralLedger = {
  openingBalance: number;
  closingBalance: number;
  lines: {
    entryDate: string;
    entryNumber: string;
    memo: string;
    journalType: string;
    description: string | null;
    costCenterCode: string | null;
    debit: number;
    credit: number;
    balance: number;
  }[];
};

export const fetchTrialBalance = async (
  dateFrom: string,
  dateTo: string,
): Promise<TrialBalance> => {
  const { data } = await financeApi.get<TrialBalance>("/reports/trial-balance", {
    params: { dateFrom, dateTo },
  });
  return data;
};

export const fetchProfitAndLoss = async (
  dateFrom: string,
  dateTo: string,
): Promise<ProfitAndLoss> => {
  const { data } = await financeApi.get<ProfitAndLoss>(
    "/reports/profit-and-loss",
    { params: { dateFrom, dateTo } },
  );
  return data;
};

export const fetchBalanceSheet = async (asOf: string): Promise<BalanceSheet> => {
  const { data } = await financeApi.get<BalanceSheet>("/reports/balance-sheet", {
    params: { asOf },
  });
  return data;
};

export const fetchCashMovement = async (
  dateFrom: string,
  dateTo: string,
): Promise<CashMovement> => {
  const { data } = await financeApi.get<CashMovement>("/reports/cash-movement", {
    params: { dateFrom, dateTo },
  });
  return data;
};

export const fetchGeneralLedger = async (
  accountId: string,
  dateFrom: string,
  dateTo: string,
): Promise<GeneralLedger> => {
  const { data } = await financeApi.get<GeneralLedger>(
    "/reports/general-ledger",
    { params: { accountId, dateFrom, dateTo } },
  );
  return data;
};