"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const lodash_1 = require("./utils/lodash");
const command_1 = require("./command");
const script_1 = require("./script");
const PromiseContainer = require("./promiseContainer");
const standard_as_callback_1 = require("standard-as-callback");
const DROP_BUFFER_SUPPORT_ERROR = "*Buffer methods are not available " +
    'because "dropBufferSupport" option is enabled.' +
    "Refer to https://github.com/luin/ioredis/wiki/Improve-Performance for more details.";
/**
 * Commander
 *
 * This is the base class of Redis, Redis.Cluster and Pipeline
 *
 * @param {boolean} [options.showFriendlyErrorStack=false] - Whether to show a friendly error stack.
 * Will decrease the performance significantly.
 * @constructor
 */
function Commander() {
    this.options = lodash_1.defaults({}, this.options || {}, {
        showFriendlyErrorStack: false,
    });
    this.scriptsSet = {};
}
exports.default = Commander;
const commands = require("redis-commands").list.filter(function (command) {
    return command !== "monitor";
});
commands.push("sentinel");
/**
 * Return supported builtin commands
 *
 * @return {string[]} command list
 * @public
 */
Commander.prototype.getBuiltinCommands = function () {
    return commands.slice(0);
};
/**
 * Create a builtin command
 *
 * @param {string} commandName - command name
 * @return {object} functions
 * @public
 */
Commander.prototype.createBuiltinCommand = function (commandName) {
    return {
        string: generateFunction(commandName, "utf8"),
        buffer: generateFunction(commandName, null),
    };
};
commands.forEach(function (commandName) {
    Commander.prototype[commandName] = generateFunction(commandName, "utf8");
    Commander.prototype[commandName + "Buffer"] = generateFunction(commandName, null);
});
Commander.prototype.call = generateFunction("utf8");
Commander.prototype.callBuffer = generateFunction(null);
// eslint-disable-next-line @typescript-eslint/camelcase
Commander.prototype.send_command = Commander.prototype.call;
/**
 * Define a custom command using lua script
 *
 * @param {string} name - the command name
 * @param {object} definition
 * @param {string} definition.lua - the lua code
 * @param {number} [definition.numberOfKeys=null] - the number of keys.
 * @param {boolean} [definition.readOnly=false] - force this script to be readonly so it executes on slaves as well.
 * If omit, you have to pass the number of keys as the first argument every time you invoke the command
 */
Commander.prototype.defineCommand = function (name, definition) {
    const script = new script_1.default(definition.lua, definition.numberOfKeys, this.options.keyPrefix, definition.readOnly);
    this.scriptsSet[name] = script;
    this[name] = generateScriptingFunction(script, "utf8");
    this[name + "Buffer"] = generateScriptingFunction(script, null);
};
/**
 * Send a command
 *
 * @abstract
 * @public
 */
Commander.prototype.sendCommand = function () { };
function generateFunction(_commandName, _encoding) {
    if (typeof _encoding === "undefined") {
        _encoding = _commandName;
        _commandName = null;
    }
    return function () {
        let firstArgIndex = 0;
        let commandName = _commandName;
        if (commandName === null) {
            commandName = arguments[0];
            firstArgIndex = 1;
        }
        let length = arguments.length;
        const lastArgIndex = length - 1;
        let callback = arguments[lastArgIndex];
        if (typeof callback !== "function") {
            callback = undefined;
        }
        else {
            length = lastArgIndex;
        }
        const args = new Array(length - firstArgIndex);
        for (let i = firstArgIndex; i < length; ++i) {
            args[i - firstArgIndex] = arguments[i];
        }
        let options;
        if (this.options.dropBufferSupport) {
            if (!_encoding) {
                return standard_as_callback_1.default(PromiseContainer.get().reject(new Error(DROP_BUFFER_SUPPORT_ERROR)), callback);
            }
            options = { replyEncoding: null };
        }
        else {
            options = { replyEncoding: _encoding };
        }
        if (this.options.showFriendlyErrorStack) {
            options.errorStack = new Error().stack;
        }
        if (this.options.keyPrefix) {
            options.keyPrefix = this.options.keyPrefix;
        }
        return this.sendCommand(new command_1.default(commandName, args, options, callback));
    };
}
function generateScriptingFunction(_script, _encoding) {
    return function () {
        let length = arguments.length;
        const lastArgIndex = length - 1;
        let callback = arguments[lastArgIndex];
        if (typeof callback !== "function") {
            callback = undefined;
        }
        else {
            length = lastArgIndex;
        }
        const args = new Array(length);
        for (let i = 0; i < length; i++) {
            args[i] = arguments[i];
        }
        let options;
        if (this.options.dropBufferSupport) {
            if (!_encoding) {
                return standard_as_callback_1.default(PromiseContainer.get().reject(new Error(DROP_BUFFER_SUPPORT_ERROR)), callback);
            }
            options = { replyEncoding: null };
        }
        else {
            options = { replyEncoding: _encoding };
        }
        if (this.options.showFriendlyErrorStack) {
            options.errorStack = new Error().stack;
        }
        return _script.execute(this, args, options, callback);
    };
}