import im = require('./interfaces');
import intm = require('./internal');
import process = require('process');

//-----------------------------------------------------------------------
// Variables
//-----------------------------------------------------------------------

/**
 * sets env variable for this action and future actions in the job
 * @param name the name of the variable to set
 * @param val the value of the variable
 */
export function exportVariable(name: string, val: string) {
    process.env[name] = val;
    intm._issueCommand('set-variable', {'name': name}, val);
}

/**
 * exports the variable and registers a secret which will get masked from logs
 * @param name the name of the variable to set
 * @param val value of the secret
 */
export function setSecret(name: string, val: string) {
    exportVariable(name, val);
    intm._issueCommand('set-secret', {}, val);
} 

/**
 * Gets the value of an input.  The value is also trimmed.
 * 
 * @param     name     name of the input to get
 * @param     options  optional. See InputOptions.
 * @returns   string
 */
export function getInput(name: string, options?: im.InputOptions): string {
    let val: string = process.env['INPUT_' + name.replace(' ', '_').toUpperCase()] || '';
    if (options && options.required && !val) {
        throw new Error(`Input required and not supplied: ${name}`);
    }

    return val.trim();
}

//-----------------------------------------------------------------------
// Results
//-----------------------------------------------------------------------

/**
 * Sets the action status to neutral
 */
export function setNeutral() {
    process.exitCode = im.ExitCode.Neutral;
}

/**
 * Sets the action status to failed.  
 * When the action exits it will be with an exit code of 1
 * @param message add error issue message
 */
export function setFailed(message: string) {
    process.exitCode = im.ExitCode.Failure;
    error(message);
}

//-----------------------------------------------------------------------
// Logging Commands
//-----------------------------------------------------------------------

/**
 * Writes debug message to user log
 * @param message debug message
 */
export function debug(message: string) {
    intm._issueCommand('debug', {}, message);
}

/**
 * Adds an error issue
 * @param message error issue message
 */
export function error(message: string) {
    intm._issue('error', message);
}

/**
 * Adds an warning issue
 * @param message warning issue message
 */
export function warning(message: string) {
    intm._issue('warning', message);
}