From f74eec6a1fd36f68bff9cef727c4988b0fe6d2e9 Mon Sep 17 00:00:00 2001
From: Ashley Cui <acui@redhat.com>
Date: Thu, 24 Oct 2024 15:51:54 -0400
Subject: [PATCH] Open path in terminal

Allow opening of a path from a URL option, path=path.
If the terminal is busy, then warn the user and prompt them to
continue.

Signed-off-by: Ashley Cui <acui@redhat.com>
---
 pkg/systemd/overview.jsx |  4 +++
 pkg/systemd/terminal.jsx | 73 +++++++++++++++++++++++++++++++++++++---
 2 files changed, 73 insertions(+), 4 deletions(-)

diff --git a/pkg/systemd/overview.jsx b/pkg/systemd/overview.jsx
index 7ade0dc27cb0..8300d8aabea8 100644
--- a/pkg/systemd/overview.jsx
+++ b/pkg/systemd/overview.jsx
@@ -168,6 +168,10 @@ class OverviewPage extends React.Component {
                          this.state.hostnameData.OperatingSystemPrettyName &&
                          <div className="ct-overview-header-subheading" id="system_information_os_text">{cockpit.format(_("running $0"), this.state.hostnameData.OperatingSystemPrettyName)}</div>}
                     </div>
+                    {/* DEV ARTIFACT: FOR TESTING */}
+                    <button ref={this.asdf}
+                    className="pf-v5-c-button pf-m-secondary asdf"
+                     onClick={() => cockpit.jump("/system/terminal#/?path=/home%2Fadmin%2Fa%2Fb")}>{_("asdf")}</button>
                     <div className='ct-overview-header-actions'>
                         { show_superuser && <SuperuserIndicator proxy={this.superuser} /> }
                         { "\n" }
diff --git a/pkg/systemd/terminal.jsx b/pkg/systemd/terminal.jsx
index 03ada383bae5..c43e3283a1d8 100644
--- a/pkg/systemd/terminal.jsx
+++ b/pkg/systemd/terminal.jsx
@@ -7,6 +7,11 @@ import { createRoot } from "react-dom/client";
 import { FormSelect, FormSelectOption } from "@patternfly/react-core/dist/esm/components/FormSelect/index.js";
 import { NumberInput } from "@patternfly/react-core/dist/esm/components/NumberInput/index.js";
 import { Toolbar, ToolbarContent, ToolbarGroup, ToolbarItem } from "@patternfly/react-core/dist/esm/components/Toolbar/index.js";
+import { Modal } from "@patternfly/react-core/dist/esm/components/Modal/index.js";
+import { Button } from '@patternfly/react-core/dist/esm/components/Button';
+import { Alert, AlertActionCloseButton } from "@patternfly/react-core/dist/esm/components/Alert/index.js";
+
+
 
 import "./terminal.scss";
 
@@ -26,17 +31,21 @@ const _ = cockpit.gettext;
      * Spawns the user's shell in the user's home directory.
      */
     class UserTerminal extends React.Component {
-        createChannel(user) {
-            return cockpit.channel({
+        createChannel(user, dir) {
+            const ch = cockpit.channel({
                 payload: "stream",
                 spawn: [user.shell || "/bin/bash"],
                 environ: [
                     "TERM=xterm-256color",
                 ],
-                directory: user.home || "/",
+                directory: dir || user.home || "/",
                 pty: true,
                 binary: true,
+                pid: null,
             });
+            ch.addEventListener("ready", (_, msg) => this.setState({ pid: msg.pid }), { once: true });
+            ch.addEventListener("close", () => this.setState({ pid: null }), { once: true });
+            return ch;
         }
 
         constructor(props) {
@@ -66,12 +75,17 @@ const _ = cockpit.gettext;
                 title: 'Terminal',
                 theme: theme || "black-theme",
                 size: parseInt(size) || 16,
+                changePathBusy: false,
+                pid: null,
+                // pathError: null,
             };
             this.onTitleChanged = this.onTitleChanged.bind(this);
             this.onResetClick = this.onResetClick.bind(this);
             this.onThemeChanged = this.onThemeChanged.bind(this);
             this.onPlus = this.onPlus.bind(this);
             this.onMinus = this.onMinus.bind(this);
+            this.onModal = this.onModal.bind(this);
+            this.onNavigate = this.onNavigate.bind(this);
 
             this.terminalRef = React.createRef();
             this.resetButtonRef = React.createRef();
@@ -81,8 +95,13 @@ const _ = cockpit.gettext;
         }
 
         async componentDidMount() {
+            cockpit.addEventListener("locationchanged", this.onNavigate);
             const user = await cockpit.user();
-            this.setState({ user, channel: this.createChannel(user) });
+            this.setState({ user, channel: this.createChannel(user, cockpit.location.options.path) });
+        }
+
+        componentWillUnmount() {
+            cockpit.removeEventListener("locationchanged", this.onNavigate);
         }
 
         onTitleChanged(title) {
@@ -95,6 +114,33 @@ const _ = cockpit.gettext;
             document.cookie = cookie;
         }
 
+        onModal(){
+            this.setState({ changePathBusy: false });
+            this.setState(prevState => ({ channel: this.createChannel(prevState.user, cockpit.location.options.path)}));
+        }
+
+        async onNavigate(){
+            if (cockpit.location.options.path) {
+                // const cmmd = "test -d " + cockpit.location.options.path
+                // cockpit.script(cmmd, [], {err: "message"})
+                //     .catch((err) => {
+                //     this.setState({ pathError: true })
+                // })
+                if (this.state.pid !== null){
+                    const cmmd = "grep -qr '^PPid:[[:space:]]*" + this.state.pid + "$' /proc/*/status";
+                    cockpit.script(cmmd, [], {err: "message"})
+                        .then(() => {
+                            console.log("pid exists")
+                            this.setState({ changePathBusy: true })
+                        })
+                        .catch((err) => {
+                            console.log("pid not exists")
+                            this.setState(prevState => ({ channel: this.createChannel(prevState.user, cockpit.location.options.path) }));
+                        })
+                }
+            }
+        }
+
         onPlus() {
             this.setState((state, _) => {
                 localStorage.setItem('terminal:font-size', state.size + 1);
@@ -185,7 +231,26 @@ const _ = cockpit.gettext;
                                 </ToolbarItem>
                             </ToolbarContent>
                         </Toolbar>
+                        <Modal title={_("Change directory?")}
+                            position="top"
+                            variant="small"
+                            isOpen={this.state.changePathBusy}
+                            onClose={() => this.setState({ changePathBusy: false })}
+                            actions={[
+                                    <Button key="confirm" variant="primary" onClick={this.onModal}>
+                                    {_("Continue")}
+                                </Button>,
+                                <Button key="cancel" variant="secondary" onClick={() => this.setState({ changePathBusy: false })}>
+                                    {_("Cancel")}
+                                </Button>
+                            ]}>
+                            {_("There is still a process running in this terminal.\nChanging the directory will kill it.")}
+                        </Modal>
                     </div>
+                    {/* <div className={"warn"}>
+                    <Alert isInline variant='danger'
+                        title="Invalid path" />
+                    </div> */}
                     <div className={"terminal-body " + this.state.theme} id="the-terminal">
                         {terminal}
                     </div>