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// Copyright 2020-2020 The Mandarine.TS Framework authors. All rights reserved. MIT license.
import type { Mandarine } from "../../Mandarine.ns.ts";import { CommonUtils } from "../../utils/commonUtils.ts";
/** * This class represents the default resolver for resources. * It is used by Mandarine to resolve static content. * It can be overriden or you can create a personalized resolver with your own code. * Refer to the documentation https://mandarineframework.gitbook.io/mandarine-ts/mandarine-core/resource-handlers/resource-resolver */export class MandarineResourceResolver implements Mandarine.MandarineMVC.HTTPResolvers.ResourceResolver {
    public resolve(httpContext: Mandarine.Types.RequestContext, resourcePath: string): Uint8Array | undefined {
        let resourceExt = null;
        if(resourcePath.includes(".")) {            let extensionsInResource = resourcePath.split(".");            resourceExt = extensionsInResource[extensionsInResource.length - 1];        }
        if(CommonUtils.fileDirExists(resourcePath)) {
            let stats: Deno.FileInfo;                    try {                stats = Deno.statSync(resourcePath);            } catch(error) {                throw error;            }                    httpContext.response.headers.set("Content-Length", String(stats.size));            if (!httpContext.response.headers.has("Last-Modified") && stats.mtime) {                httpContext.response.headers.set("Last-Modified", stats.mtime.toUTCString());            }                    if (!httpContext.response.headers.has("Cache-Control")) {                const directives = [`max-age=0`];                httpContext.response.headers.set("Cache-Control", directives.join(","));            }                    if (!httpContext.response.type && resourceExt) {                httpContext.response.type = `.${resourceExt}`;            }                    return Deno.readFileSync(resourcePath);        }
    }
}