Cascade different refactorings to eliminate global shared state from app paths

Co-authored-by: Mikko Aspiala <mikko.aspiala@gmail.com>

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

src/main/shell-session/local-shell-session/local-shell-session.ts

@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) 2021 OpenLens Authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+import path from "path";
+import { helmCli } from "../../helm/helm-cli";
+import { UserStore } from "../../../common/user-store";
+import { ShellSession } from "../shell-session";
+
+export class LocalShellSession extends ShellSession {
+  ShellType = "shell";
+
+  protected getPathEntries(): string[] {
+    return [helmCli.getBinaryDir()];
+  }
+
+  protected get cwd(): string | undefined {
+    return this.cluster.preferences?.terminalCWD;
+  }
+
+  public async open() {
+    const env = await this.getCachedShellEnv();
+    const shell = env.PTYSHELL;
+    const args = await this.getShellArgs(shell);
+
+    await this.openShellProcess(env.PTYSHELL, args, env);
+  }
+
+  protected async getShellArgs(shell: string): Promise<string[]> {
+    const helmpath = helmCli.getBinaryDir();
+    const pathFromPreferences = UserStore.getInstance().kubectlBinariesPath || this.kubectl.getBundledPath();
+    const kubectlPathDir = UserStore.getInstance().downloadKubectlBinaries ? await this.kubectlBinDirP : path.dirname(pathFromPreferences);
+
+    switch(path.basename(shell)) {
+      case "powershell.exe":
+        return ["-NoExit", "-command", `& {$Env:PATH="${helmpath};${kubectlPathDir};$Env:PATH"}`];
+      case "bash":
+        return ["--init-file", path.join(await this.kubectlBinDirP, ".bash_set_path")];
+      case "fish":
+        return ["--login", "--init-command", `export PATH="${helmpath}:${kubectlPathDir}:$PATH"; export KUBECONFIG="${await this.kubeconfigPathP}"`];
+      case "zsh":
+        return ["--login"];
+      default:
+        return [];
+    }
+  }
+}