"use strict";

const fs = require('fs');
const async = require('async');
const glob = require('glob');
const settings = require('../../settings');

const addAssemblyAttribute = (content, attribute) => content + "\n" + attribute + "\n";

module.exports = (params, processor) => ({
    process: () => {
        if (processor.context.dotnetrewriterDone) {
            return processor.done();
        }

        processor.context.dotnetrewriterDone = true;

        const processAssemblyInfo = (appendInformationalVersion) => (content, cb) => {
            if (!params.skipCodeSigning && !settings.skipCodeSigning) {
                content = content.replace(
                    /InternalsVisibleTo\s*\(\s*"([\w.]+)"\s*\)/g,
                    (match, p1) => "InternalsVisibleTo(\"" + p1 + ",PublicKey=" + settings.codeSigningPublicKey + "\")"
                );
            }

            if (appendInformationalVersion) {
                content = addAssemblyAttribute(content, "[assembly: System.Reflection.AssemblyInformationalVersion(\"" + processor.context.versionInfo + "\")]");
            }

            return cb(null, content);
        };

        glob("**/{InternalsVisible,AssemblyInfo}*.cs", {cwd: processor.context.exported}, (err, files) => {
            if (err) {
                processor.onError(err);
                return processor.done();
            }

            processor.onInfo("Found " + files.length + " AssemblyInfo.cs files");

            if (!files || !files.length) {
                processor.onWarn("No AssemblyInfo.cs found");
                return processor.done();
            }

            return async.parallel(files.map((file) => (callback) => async.waterfall([
                fs.readFile.bind(null, processor.context.exported + "/" + file, { encoding: "utf8" }),
                processAssemblyInfo(file.toLowerCase().indexOf("assemblyinfo.cs") >= 0),
                fs.writeFile.bind(null, processor.context.exported + "/" + file)
            ], (err) => {
                if (err) {
                    processor.onError("Unable to rewrite file " + file + ": " + err);
                } else {
                    processor.onInfo("Rewritten file " + file);
                }
                callback(err);
            })), processor.done.bind(processor));
        });
    }
});