import {dialog, ipcMain} from "electron";
import fileIndex from "./index";
import { existsSync, mkdirSync } from "fs";
import { join } from "path";
import { downloadFile } from "./download";
import { AppEnv } from "../env";
import { normalizePath } from "../../lib/path-util";

ipcMain.handle("file:exists", async (_, filePath: string): Promise<boolean> => {
    try {
        return existsSync(filePath);
    } catch (e) {
        console.error("[file:exists] 检查文件存在性失败:", filePath, e);
        return false;
    }
});

ipcMain.handle("path:join", async (_, ...segments: string[]): Promise<string> => {
    try {
        return join(...segments);
    } catch (e) {
        console.error("[path:join] 路径拼接失败:", segments, e);
        throw e;
    }
});

// 🔧 新增：路径标准化接口（处理中文路径和空格）
ipcMain.handle("file:normalizePath", async (_, filePath: string): Promise<string> => {
    try {
        return normalizePath(filePath);
    } catch (e) {
        console.error("[file:normalizePath] 路径标准化失败:", filePath, e);
        return filePath; // 失败时返回原路径
    }
});

ipcMain.handle("file:fullPath", async (_, filePath: string): Promise<string> => {
    try {
        console.log("[file:fullPath] 处理请求，路径:", filePath);
        const result = await fileIndex.fullPath(filePath);
        console.log("[file:fullPath] 返回结果:", result);
        return result;
    } catch (e: any) {
        console.error("[file:fullPath] 获取完整路径失败:", filePath, e);
        throw new Error(`Failed to get full path: ${e.message}`);
    }
});

ipcMain.handle("file:openFile", async (
    event,
    options: {
        filters?: {
            name: string;
            extensions: string[];
        }[],
        properties?: ("multiSelections" | "openFile")[]
    } = {}): Promise<string | string[] | null> => {
    options = Object.assign({
        filters: [],
        properties: [],
    }, options);
    if (!options.properties.includes("openFile")) {
        options.properties.push("openFile");
    }
    // @ts-ignore
    options.properties.push('noResolveAliases');
    const res = await dialog
        .showOpenDialog({
            ...options,
        })
        .catch(e => {
        });
    if (!res || res.canceled) {
        return null;
    }
    if (options.properties.includes("multiSelections")) {
        return res.filePaths || null;
    }
    return res.filePaths?.[0] || null;
});

ipcMain.handle("file:openDirectory", async (_, options): Promise<string | null> => {
    const res = await dialog
        .showOpenDialog({
            properties: ["openDirectory"],
            ...options,
        })
        .catch(e => {
        });
    if (!res || res.canceled) {
        return null;
    }
    return res.filePaths?.[0] || null;
});

ipcMain.handle("file:openSave", async (_, options): Promise<string | null> => {
    const res = await dialog
        .showSaveDialog({
            ...options,
        })
        .catch(e => {
        });
    if (!res || res.canceled) {
        return null;
    }
    return res.filePath || null;
});

ipcMain.handle("file:temp", async (_, ext: string = "tmp", prefix: string = "file", suffix: string = ""): Promise<string> => {
    try {
        return await fileIndex.temp(ext, prefix, suffix);
    } catch (e: any) {
        console.error("[file:temp] 获取临时文件路径失败:", e);
        throw e;
    }
});

ipcMain.handle("file:writeBuffer", async (_, path: string, data: any, option?: { isDataPath?: boolean }): Promise<void> => {
    try {
        return await fileIndex.writeBuffer(path, data, option);
    } catch (e: any) {
        console.error("[file:writeBuffer] 写入缓冲区失败:", path, e);
        throw e;
    }
});

ipcMain.handle("file:hubSave", async (_, file: string, option?: any): Promise<string> => {
    try {
        return await fileIndex.hubSave(file, option);
    } catch (e: any) {
        console.error("[file:hubSave] Hub保存失败:", file, e);
        throw e;
    }
});

ipcMain.handle("file:deletes", async (_, path: string, option?: { isDataPath?: boolean }): Promise<void> => {
    try {
        return await fileIndex.deletes(path, option);
    } catch (e: any) {
        console.error("[file:deletes] 删除文件失败:", path, e);
        throw e;
    }
});

const autoCleanTemp = async () => {
    fileIndex.autoCleanTemp(1).finally(() => {
        setTimeout(() => {
            autoCleanTemp();
        }, 10 * 60 * 1000);
    });
}

setTimeout(() => {
    autoCleanTemp().then();
}, 5000);

// 下载外部URL文件到本地
ipcMain.handle("file:downloadUrl", async (_, url: string, saveDir?: string): Promise<string> => {
    try {
        console.log("[file:downloadUrl] 开始下载文件:", url);
        const filePath = await downloadFile(url, saveDir);
        console.log("[file:downloadUrl] 文件下载成功:", filePath);
        return filePath;
    } catch (error: any) {
        console.error("[file:downloadUrl] 下载文件失败:", error.message);
        throw new Error(`下载文件失败: ${error.message}`);
    }
});

// 获取输出目录（用于字体文件等临时文件）
// 使用 AppEnv.dataRoot/output 目录，便携版模式下会在应用目录下
ipcMain.handle("file:getOutputDir", async (): Promise<string> => {
    try {
        const outputDir = join(AppEnv.dataRoot, 'output');
        if (!existsSync(outputDir)) {
            mkdirSync(outputDir, { recursive: true });
        }
        console.log("[file:getOutputDir] 返回输出目录:", outputDir);
        return outputDir;
    } catch (error: any) {
        console.error("[file:getOutputDir] 获取输出目录失败:", error.message);
        throw new Error(`获取输出目录失败: ${error.message}`);
    }
});

export default {
    ...fileIndex,
};

export const Files = {
    ...fileIndex,
};