/*
 * Copyright 2019 IBM Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { prescanModel } from './plugins';
/**
 * Return a table view of the commands offered by the given plugin
 *
 * @param plugin the name of an installed plugin, e.g. plugin-core-support
 *
 */
export default function commandsOffered(plugin) {
    return __awaiter(this, void 0, void 0, function* () {
        const { commandToPlugin, flat, usage, docs } = prescanModel();
        const commands = [];
        const pluginIsInstalled = !!flat.find(({ route }) => route === plugin);
        if (!pluginIsInstalled) {
            const err = new Error(`Plugin ${plugin} is not installed`);
            err.code = 404;
            throw err;
        }
        for (const command in commandToPlugin) {
            const hostingPlugin = commandToPlugin[command];
            if (plugin && hostingPlugin === plugin) {
                commands.push(command);
            }
        }
        commands.sort((a, b) => -a.localeCompare(b));
        /* commands.filter(
          (command, idx) => !commands.find((other, otherIdx) => idx !== otherIdx && command.endsWith(other))
        ) */
        function find(command, A = command.split('/'), idx = 2, prefix = `/${A[1]}`, subtree = usage[prefix]) {
            if (!subtree) {
                return;
            }
            if (A.length - idx === 0) {
                return subtree.usage;
            }
            else if (!subtree.children) {
            }
            else {
                const prefixPlus = `${prefix}/${A[idx]}`;
                return find(command, A, idx + 1, prefixPlus, subtree.children[prefixPlus]);
            }
        }
        return {
            header: {
                name: 'command',
                attributes: [{ value: 'About' }]
            },
            body: commands
                .map(command => ({ command, usage: find(command), name: command.replace(/^\//, '').replace(/\//g, ' ') }))
                .filter(_ => !_.usage || (!_.usage.synonymFor && !_.usage.children))
                .map(({ command, name }) => ({
                type: 'command',
                name: process.env.KUI_BIN_PREFIX_FOR_COMMANDS ? `${process.env.KUI_BIN_PREFIX_FOR_COMMANDS} ${name}` : name,
                attributes: [{ key: 'about', value: docs[command] }],
                onclick: name
            }))
        };
    });
}
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