import { injectable } from "inversify";

import * as taskLib from "azure-pipelines-task-lib/task";
import * as toolLib from "azure-pipelines-tool-lib/tool";

import { IBuildAgent, IExecResult } from "../interfaces";

@injectable()
class BuildAgent implements IBuildAgent {

    public find(toolName: string, versionSpec: string, arch?: string): string {
        return toolLib.findLocalTool(toolName, versionSpec, arch);
    }

    public cacheDir(sourceDir: string, tool: string, version: string, arch?: string): Promise<string> {
        return toolLib.cacheDir(sourceDir, tool, version, arch);
    }

    public createTempDir(): Promise<string> {
        return Promise.resolve(taskLib.getVariable("Agent.TempDirectory"));
    }

    public debug(message: string): void {
        taskLib.debug(message);
    }

    public setFailed(message: string, done?: boolean): void {
        taskLib.setResult(taskLib.TaskResult.Failed, message, done);
    }

    public setSucceeded(message: string, done?: boolean): void {
        taskLib.setResult(taskLib.TaskResult.Succeeded, message, done);
    }

    public exportVariable(name: string, val: string): void {
        taskLib.setVariable(name, val);
    }

    public getVariable(name: string): string {
        return taskLib.getVariable(name);
    }

    public addPath(inputPath: string): void {
        toolLib.prependPath(inputPath);
    }

    public which(tool: string, check?: boolean): Promise<string> {
        return Promise.resolve(taskLib.which(tool, check));
    }

    public exec(exec: string, args: string[]): Promise<IExecResult> {
        const tr = taskLib.tool(exec);
        tr.arg(args);

        const result = tr.execSync();
        return Promise.resolve({
            code: result.code,
            error: result.error,
            stderr: result.stderr,
            stdout: result.stdout,
        });
    }

    public getSourceDir(): string {
        return this.getVariable("Build.SourcesDirectory");
    }

    public setOutput(name: string, value: string): void {
        taskLib.setVariable(name, value);
    }

    public getInput(input: string, required?: boolean): string {
        return taskLib.getInput(input, required);
    }

    public getBooleanInput(input: string, required?: boolean): boolean {
        return taskLib.getBoolInput(input, required);
    }

    public isValidInputFile(input: string, file: string) {
        return taskLib.filePathSupplied(input) && this.fileExists(file);
    }

    public fileExists(file: string) {
        return taskLib.exist(file) && taskLib.stats(file).isFile();
    }

    public directoryExists(file: string) {
        return taskLib.exist(file) && taskLib.stats(file).isDirectory();
    }
}

export {
    BuildAgent,
};