/**
 * @author Martin Karkowski
 * @email m.karkowski@zema.de
 * @create date 2020-02-18 16:28:19
 * @modify date 2020-12-02 08:58:38
 * @desc [description]
 */

import { get } from "http";
import { TsFromSwagger } from "swagger-ts-client";
import { camelize, replaceAll } from "../../../lib/helpers/stringMethods";
import { DEFAULT_URI } from "../defaults/default.params";

/**
 * Hack to Fix the Swagger Definition.
 *
 * To fix the Broken Swagger Definition. Download the Definition File.
 * Then Replace the broken chars and parse it as JSON.
 *
 */
get(DEFAULT_URI + "/v2/api-docs", (res) => {
  const { statusCode } = res;
  const contentType = res.headers["content-type"];

  let error;
  if (statusCode !== 200) {
    error = new Error("Request Failed.\n" + `Status Code: ${statusCode}`);
  } else if (!/^application\/json/.test(contentType)) {
    error = new Error(
      "Invalid content-type.\n" +
        `Expected application/json but received ${contentType}`
    );
  }
  if (error) {
    console.error(error.message);
    // Consume response data to free up memory
    res.resume();
    return;
  }

  res.setEncoding("utf8");
  let rawData = "";
  res.on("data", (chunk) => {
    rawData += chunk;
  });
  res.on("end", () => {
    try {
      rawData = replaceAll(rawData, "«", "<");
      rawData = replaceAll(rawData, "»", ">");

      const settings = {
        swaggerProvider: {
          // Function to Return all Elements
          provide: () => JSON.parse(rawData)
        },

        type: {
          outPutPath: "./modules/xetics-lean-connector/generated/interfaces.ts",
          generatedTypes: "interface",
          templateFile:
            "./modules/xetics-lean-connector/helper/typeDefinitions.handlebars",
          membersOptional: true
        },
        operations: {
          outPutPath: "./modules/xetics-lean-connector/generated/clients",
          operationsNameTransformFn(name: string, httpVerb, operation) {
            let adaptedName = name;
            if (name.split("/").length > 1) {
              adaptedName = name.split("/").slice(3).join("/");
            }
            adaptedName = replaceAll(adaptedName, "-", "_");
            adaptedName = replaceAll(adaptedName, "{", "by_");
            adaptedName = replaceAll(adaptedName, "}", "");
            // adaptedName = adaptedName.replace(/\{\w*}/g, '');
            adaptedName = replaceAll(adaptedName, "/", "_");

            return camelize(httpVerb + "_" + adaptedName);
          },
          operationsGroupNameTransformFn(name: string, httpVerb, operation) {
            const adaptedName = operation.tags[0];
            return camelize(adaptedName, "-");
          },
          templateFile:
            "./modules/xetics-lean-connector/helper/node-rest-client.handlebars"
        },
        templateHelpers: {
          updateURL: function (context, ...options) {
            if (context && typeof context === "string") {
              console.log(context);
              return replaceAll(context, "{", "${");
            } else {
              return "";
            }
          },
          getDoku: function (context, ...options) {
            if (context && typeof context === "string") {
              return "LINK";
            } else {
              return "";
            }
          }
        }
      };

      const app = new TsFromSwagger(null, settings);
      app.generateCode();
    } catch (e) {
      console.error(e.message);
    }
  });
}).on("error", (e) => {
  console.error(`Got error: ${e.message}`);
});