// File Reader API 클라이언트

import { apiClient } from "./client";

export type FileType = "csv" | "tsv" | "txt" | "xlsx" | "xls";
export type SourceMode = "upload" | "watch";
export type SaveMode = "INSERT" | "UPSERT" | "REPLACE";
export type ProcessedAction = "archive" | "delete" | "mark";

export interface FileReaderMapping {
  id?: number;
  config_id?: number;
  from_column: string;
  from_column_type: "header" | "index";
  to_column: string;
  to_data_type: string;
  default_value?: string | null;
  transform_expr?: string | null;
  is_required: boolean;
  mapping_order: number;
}

export interface FileReaderConfig {
  id?: number;
  name: string;
  company_code: string;
  file_type: FileType;
  source_mode: SourceMode;
  host_path?: string | null;
  file_pattern?: string;
  processed_action?: ProcessedAction;
  archive_subdir?: string;
  has_header: boolean;
  delimiter?: string;
  encoding?: string;
  sheet_name?: string | null;
  skip_rows?: number;
  target_db_id?: number | null;
  target_schema?: string;
  target_table?: string;
  save_mode: SaveMode;
  conflict_keys?: string | null;
  cron_schedule?: string | null;
  is_active: string;
  description?: string | null;
  last_run_at?: string | null;
  last_run_result?: string | null;
  last_run_message?: string | null;
  last_processed_count?: number;
  mappings?: FileReaderMapping[];
}

export interface FileReaderHistory {
  id: number;
  config_id: number;
  file_path: string;
  file_size: number;
  file_mtime: string;
  started_at: string;
  finished_at: string | null;
  status: "success" | "failure" | "partial" | "skipped";
  rows_total: number;
  rows_inserted: number;
  rows_failed: number;
  error_message: string | null;
}

export interface PreviewResult {
  headers: string[];
  totalRows: number;
  sampleRows: Record<string, unknown>[];
}

const BASE = "/api/file-reader";

export const FileReaderAPI = {
  async list(companyCode?: string): Promise<FileReaderConfig[]> {
    const url = companyCode
      ? `${BASE}/configs?company_code=${encodeURIComponent(companyCode)}`
      : `${BASE}/configs`;
    const res = await apiClient.get<{ success: boolean; items: FileReaderConfig[] }>(url);
    return res.data.items || [];
  },
  async get(id: number): Promise<{ config: FileReaderConfig; mappings: FileReaderMapping[] }> {
    const res = await apiClient.get<{ success: boolean; config: FileReaderConfig; mappings: FileReaderMapping[] }>(
      `${BASE}/configs/${id}`
    );
    return { config: res.data.config, mappings: res.data.mappings || [] };
  },
  async create(payload: Partial<FileReaderConfig>): Promise<number> {
    const res = await apiClient.post<{ success: boolean; id: number }>(`${BASE}/configs`, payload);
    return res.data.id;
  },
  async update(id: number, payload: Partial<FileReaderConfig>): Promise<void> {
    await apiClient.put(`${BASE}/configs/${id}`, payload);
  },
  async remove(id: number): Promise<void> {
    await apiClient.delete(`${BASE}/configs/${id}`);
  },
  async preview(id: number, file: File): Promise<PreviewResult> {
    const fd = new FormData();
    fd.append("file", file);
    const res = await apiClient.post<{ success: boolean } & PreviewResult>(
      `${BASE}/configs/${id}/preview`,
      fd
    );
    return {
      headers: res.data.headers,
      totalRows: res.data.totalRows,
      sampleRows: res.data.sampleRows,
    };
  },
  async runUpload(id: number, file: File): Promise<{
    status: string; rowsTotal: number; rowsInserted: number; rowsFailed: number; errorMessage: string | null;
  }> {
    const fd = new FormData();
    fd.append("file", file);
    const res = await apiClient.post(`${BASE}/configs/${id}/run-upload`, fd);
    return res.data;
  },
  async runWatch(id: number): Promise<{ scanned: number; processed: number; skipped: number; failed: number }> {
    const res = await apiClient.post(`${BASE}/configs/${id}/run-watch`, {});
    return res.data;
  },
  async history(id: number, limit = 50): Promise<FileReaderHistory[]> {
    const res = await apiClient.get<{ success: boolean; items: FileReaderHistory[] }>(
      `${BASE}/configs/${id}/history?limit=${limit}`
    );
    return res.data.items || [];
  },
  async allowedRoots(): Promise<string[]> {
    const res = await apiClient.get<{ success: boolean; roots: string[] }>(`${BASE}/allowed-roots`);
    return res.data.roots || [];
  },
};