@mvx/mvc/es2017/results/FileResult.js

@mvx/mvc is mvc framework on server, base on koa, @tsdi frameworks

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FileResult = void 0;
const ioc_1 = require("@tsdi/ioc");
const stream_1 = require("stream");
const fs_1 = require("fs");
const path_1 = require("path");
const ResultValue_1 = require("./ResultValue");
/**
 * controller method return result type of file.
 *
 * @export
 * @class FileResult
 */
class FileResult extends ResultValue_1.ResultValue {
    constructor(file, options) {
        super((options === null || options === void 0 ? void 0 : options.contentType) || 'application/octet-stream');
        this.file = file;
        this.options = options;
    }
    async sendValue(ctx) {
        let file = this.file;
        ctx.type = this.contentType;
        if (this.options && this.options.filename) {
            ctx.attachment(this.options.filename, this.options.disposition);
        }
        let confige = ctx.mvcContext.getConfiguration();
        if (ioc_1.isString(file)) {
            let filepath = (path_1.isAbsolute(file) || !confige.baseURL) ? file : path_1.join(confige.baseURL, file);
            if (fs_1.existsSync(filepath)) {
                ctx.body = fs_1.createReadStream(filepath);
            }
        }
        else if (file instanceof Buffer) {
            ctx.body = file;
        }
        else if (file instanceof stream_1.Stream) {
            ctx.body = file;
        }
    }
    static ρAnn() {
        return { "name": "FileResult" };
    }
}
exports.FileResult = FileResult;

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