TOTVSTEC/cloudbridge-cli

'use strict';

let
    Q = require('q'),
    settings = require(__basedir + '/package.json'),
    TASKS = require('./tasks/task-list');

class CliHelp {

    static printBanner() {
        var w = function(s) {
            process.stdout.write(s.bold);
        };

        w("   ________                ______       _     __\n");
        w("  / ____/ /___  __  ______/ / __ )_____(_)___/ /___ ____ \n");
        w(" / /   / / __ \\/ / / / __  / __  / ___/ / __  / __ `/ _ \\\n");
        w("/ /___/ / /_/ / /_/ / /_/ / /_/ / /  / / /_/ / /_/ /  __/\n");
        w("\\____/_/\\____/\\__,_/\\__,_/_____/_/  /_/\\__,_/\\__, /\\___/ \n");
        w("                                            /____/\n");
        w("By TOTVS                                          v" + settings.version + "\n");
    }

    static printAvailableTasks(argv) {
        this.printBanner();

        process.stderr.write('\nUsage: cloudbridge task args\n\n=======================\n\n');

        if (process.argv.length > 2) {
            process.stderr.write((process.argv[2] + ' is not a valid task\n\n').bold.red);
        }

        process.stderr.write('Available tasks: '.bold);
        process.stderr.write('(use --help or -h for more info)\n\n');

        for (var i = 0; i < TASKS.length; i++) {
            var task = TASKS[i];
            if (task.summary) {
                var name = '   ' + task.name + '  ';
                var dots = '';
                while ((name + dots).length < 20) {
                    dots += '.';
                }
                process.stderr.write(name.green.bold + dots.grey + '  ' + task.summary.bold + '\n');
            }
        }

        process.stderr.write('\n');

        return Q();
    }

    static printHelpLines() {
        CliHelp.printBanner();
        process.stderr.write('\n=======================\n');

        for (var i = 0; i < TASKS.length; i++) {
            var task = TASKS[i];
            if (task.summary) {
                CliHelp.printUsage(task);
            }
        }

        process.stderr.write('\n');

        return Q();
    }

    static printUsage(d) {
        var w = function(s) {
            process.stdout.write(s);
        };

        w('\n');

        var rightColumn = 45;
        var dots = '';
        var indent = '';
        var x, arg;

        var taskArgs = d.name;

        for (arg in d.args) {
            taskArgs += ' ' + arg;
        }

        w(taskArgs.green.bold);

        while ((taskArgs + dots).length < rightColumn + 1) {
            dots += '.';
        }

        w(' ' + dots.grey + '  ');

        if (d.summary) {
            w(d.summary.bold);
        }

        for (arg in d.args) {
            if (!d.args[arg]) continue;

            indent = '';
            w('\n');
            while (indent.length < rightColumn) {
                indent += ' ';
            }
            w((indent + '    ' + arg + ' ').bold);

            var argDescs = d.args[arg].split('\n');
            var argIndent = indent + '    ';

            for (x = 0; x < arg.length + 1; x++) {
                argIndent += ' ';
            }

            for (x = 0; x < argDescs.length; x++) {
                if (x === 0) {
                    w(argDescs[x].bold);
                }
                else {
                    w('\n' + argIndent + argDescs[x].bold);
                }
            }
        }

        indent = '';
        while (indent.length < d.name.length + 1) {
            indent += ' ';
        }

        var optIndent = indent;
        while (optIndent.length < rightColumn + 4) {
            optIndent += ' ';
        }

        for (var opt in d.options) {
            w('\n');
            dots = '';

            var optLine = indent + '[' + opt + ']  ';

            w(optLine.yellow.bold);

            if (d.options[opt]) {
                while ((dots.length + optLine.length - 2) < rightColumn) {
                    dots += '.';
                }
                w(dots.grey + '  ');

                var taskOpt = d.options[opt],
                    optDescs;

                if (typeof taskOpt == 'string') {
                    optDescs = taskOpt.split('\n');
                }
                else {
                    optDescs = taskOpt.summary.split('\n');
                }

                for (x = 0; x < optDescs.length; x++) {
                    if (x === 0) {
                        w(optDescs[x].bold);
                    }
                    else {
                        w('\n' + optIndent + optDescs[x].bold);
                    }
                }
            }
        }

        w('\n');
    }
}

module.exports = CliHelp;