const { ipcMain } = require('electron');
const { openApiSpecDialog, openApiSpec } = require('../app/apiSpecs');
const { writeFile } = require('../utils/filesystem');
const { removeApiSpecUid } = require('../cache/apiSpecUids');
const { removeApiSpecFromWorkspace } = require('../utils/workspace-config');
const { getCertsAndProxyConfig } = require('./network/cert-utils');
const { makeAxiosInstance } = require('./network/axios-instance');
const { proxySwaggerFetch } = require('./swagger-fetch');
const path = require('path');
const fs = require('fs');

const registerRendererEventHandlers = (mainWindow, watcher, lastOpenedApiSpecs) => {
  ipcMain.handle('renderer:open-api-spec', (event, workspacePath = null) => {
    if (watcher && mainWindow) {
      openApiSpecDialog(mainWindow, watcher, { workspacePath });
    }
  });

  ipcMain.handle('renderer:open-api-spec-file', (event, apiSpecPath, workspacePath = null) => {
    if (watcher && mainWindow) {
      openApiSpec(mainWindow, watcher, apiSpecPath, { workspacePath });
    }
  });

  ipcMain.handle('renderer:save-api-spec', async (event, pathname, content) => {
    try {
      await writeFile(pathname, content);
      Promise.resolve();
    } catch (error) {
      return Promise.reject(error);
    }
  });

  ipcMain.handle('renderer:create-api-spec', async (event, apiSpecName, apiSpecLocation, content = '', workspacePath = null) => {
    try {
      let pathname = path.join(apiSpecLocation, apiSpecName);
      if (fs.existsSync(pathname)) {
        throw new Error(`path: ${pathname} already exists`);
      }
      await writeFile(pathname, content);
      openApiSpec(mainWindow, watcher, pathname, { workspacePath });
    } catch (error) {
      return Promise.reject(error);
    }
  });

  ipcMain.handle('renderer:remove-api-spec', async (event, pathname, workspacePath = null) => {
    try {
      if (watcher && mainWindow) {
        watcher.removeWatcher(pathname, mainWindow);
        removeApiSpecUid(pathname);

        if (workspacePath) {
          const workspaceFilePath = path.join(workspacePath, 'workspace.yml');

          if (fs.existsSync(workspaceFilePath)) {
            await removeApiSpecFromWorkspace(workspacePath, pathname);
          }
        }
      }
    } catch (error) {
      return Promise.reject(error);
    }
  });

  ipcMain.handle('renderer:fetch-api-spec', async (event, url) => {
    try {
      // Use a proxy-aware axios instance so that the user's configured proxy
      const { proxyMode, proxyConfig, httpsAgentRequestFields, interpolationOptions }
        = await getCertsAndProxyConfig({
          collectionUid: null,
          collection: { promptVariables: {} },
          request: {},
          envVars: {},
          runtimeVariables: {},
          processEnvVars: {},
          collectionPath: '',
          globalEnvironmentVariables: {}
        });

      const axiosInstance = makeAxiosInstance({ proxyMode, proxyConfig, httpsAgentRequestFields, interpolationOptions });
      const response = await axiosInstance.get(url, {
        timeout: 30000,
        transformResponse: [(data) => data]
      });
      return response.data;
    } catch (error) {
      return Promise.reject(error);
    }
  });

  ipcMain.handle('renderer:swagger-fetch', async (event, req) => {
    return proxySwaggerFetch(req);
  });

  ipcMain.handle('renderer:ensure-apispec-folder', async (event, workspacePath) => {
    try {
      const apiSpecPath = path.join(workspacePath, 'apispec');
      if (!fs.existsSync(apiSpecPath)) {
        fs.mkdirSync(apiSpecPath, { recursive: true });
      }
      return apiSpecPath;
    } catch (error) {
      return Promise.reject(error);
    }
  });
};

const registerMainEventHandlers = (mainWindow, watcher, lastOpenedApiSpecs) => {
  ipcMain.handle('main:open-api-spec', () => {
    if (watcher && mainWindow) {
      openApiSpecDialog(mainWindow, watcher);
    }
  });
  ipcMain.on('main:apispec-opened', (win, pathname, uid, workspacePath = null) => {
    watcher.addWatcher(win, pathname, uid, {}, workspacePath);
  });
};

const registerApiSpecIpc = (mainWindow, watcher, lastOpenedApiSpecs) => {
  registerRendererEventHandlers(mainWindow, watcher, lastOpenedApiSpecs);
  registerMainEventHandlers(mainWindow, watcher, lastOpenedApiSpecs);
};

module.exports = registerApiSpecIpc;