Read URL and token from config on launch

In case the user has already configured the CLI.  This will only happen
until the first succesful connection.

Additionally, add a "use existing token" checkbox which will both not
open the browser window and will also read from the config if the token
matches the URL we are trying to open.

Lastly I removed some padding in an attempt to regain the space lost by
the additions.

Author: code-asher

src/main/kotlin/com/coder/gateway/models/CoderWorkspacesWizardModel.kt

@@ -5,5 +5,6 @@ data class CoderWorkspacesWizardModel(
     var token: String = "",
     var buildVersion: String = "",
     var localCliPath: String = "",
-    var selectedWorkspace: WorkspaceAgentModel? = null
-)
+    var selectedWorkspace: WorkspaceAgentModel? = null,
+    var useExistingToken: Boolean = false
+)

src/main/kotlin/com/coder/gateway/views/steps/CoderWorkspacesStepView.kt

@@ -76,8 +76,12 @@ import java.awt.event.MouseListener
 import java.awt.event.MouseMotionListener
 import java.awt.font.TextAttribute
 import java.awt.font.TextAttribute.UNDERLINE_ON
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.Paths
 import java.net.SocketTimeoutException
 import javax.swing.Icon
+import javax.swing.JCheckBox
 import javax.swing.JTable
 import javax.swing.JTextField
 import javax.swing.ListSelectionModel
@@ -100,6 +104,7 @@ class CoderWorkspacesStepView(val enableNextButtonCallback: (Boolean) -> Unit) :
     private val appPropertiesService: PropertiesComponent = service()
 
     private var tfUrl: JTextField? = null
+    private var cbExistingToken: JCheckBox? = null
     private var listTableModelOfWorkspaces = ListTableModel<WorkspaceAgentModel>(
         WorkspaceIconColumnInfo(""),
         WorkspaceNameColumnInfo("Name"),
@@ -201,13 +206,13 @@ class CoderWorkspacesStepView(val enableNextButtonCallback: (Boolean) -> Unit) :
                     font = JBFont.h3().asBold()
                     icon = CoderIcons.LOGO_16
                 }
-            }.topGap(TopGap.SMALL).bottomGap(BottomGap.MEDIUM)
+            }.topGap(TopGap.SMALL)
             row {
                 cell(ComponentPanelBuilder.createCommentComponent(CoderGatewayBundle.message("gateway.connector.view.coder.workspaces.comment"), false, -1, true))
             }
             row {
                 browserLink(CoderGatewayBundle.message("gateway.connector.view.login.documentation.action"), "https://coder.com/docs/coder-oss/latest/workspaces")
-            }.bottomGap(BottomGap.MEDIUM)
+            }
             row(CoderGatewayBundle.message("gateway.connector.view.login.url.label")) {
                 tfUrl = textField().resizableColumn().align(AlignX.FILL).gap(RightGap.SMALL).bindText(localWizardModel::coderURL).applyToComponent {
                     addActionListener {
@@ -223,6 +228,17 @@ class CoderWorkspacesStepView(val enableNextButtonCallback: (Boolean) -> Unit) :
                 }
                 cell()
             }
+            row {
+                cbExistingToken = checkBox(CoderGatewayBundle.message("gateway.connector.view.login.existing-token.label"))
+                    .bindSelected(localWizardModel::useExistingToken)
+                    .component
+            }
+            row {
+                cell(ComponentPanelBuilder.createCommentComponent(
+                         CoderGatewayBundle.message("gateway.connector.view.login.existing-token.tooltip",
+                                                    CoderGatewayBundle.message("gateway.connector.view.login.existing-token.label")),
+                         false, -1, true))
+            }
             row {
                 scrollCell(toolbar.createPanel().apply {
                     add(notificationBanner.component.apply { isVisible = false }, "South")
@@ -313,18 +329,70 @@ class CoderWorkspacesStepView(val enableNextButtonCallback: (Boolean) -> Unit) :
         if (localWizardModel.coderURL.isNotBlank() && localWizardModel.token.isNotBlank()) {
             triggerWorkspacePolling()
         } else {
-            val url = appPropertiesService.getValue(CODER_URL_KEY)
-            val token = appPropertiesService.getValue(SESSION_TOKEN)
-            if (!url.isNullOrBlank() && !token.isNullOrBlank()) {
+            val (url, token) = readStorageOrConfig()
+            if (!url.isNullOrBlank()) {
                 localWizardModel.coderURL = url
-                localWizardModel.token = token
                 tfUrl?.text = url
+            }
+            if (!token.isNullOrBlank()) {
+                localWizardModel.token = token
+            }
+            if (!url.isNullOrBlank() && !token.isNullOrBlank()) {
                 loginAndLoadWorkspace(token, true)
             }
         }
         updateWorkspaceActions()
     }
 
+    /**
+     * Return the URL and token from storage or the CLI config.
+     */
+    private fun readStorageOrConfig(): Pair<String?, String?> {
+        val url = appPropertiesService.getValue(CODER_URL_KEY)
+        val token = appPropertiesService.getValue(SESSION_TOKEN)
+        if (!url.isNullOrBlank() && !token.isNullOrBlank()) {
+            return url to token
+        }
+        return readConfig()
+    }
+
+    /**
+     * Return the URL and token from the CLI config.
+     */
+    private fun readConfig(): Pair<String?, String?> {
+        val configDir = getConfigDir()
+        try {
+            val url = Files.readString(configDir.resolve("url"))
+            val token = Files.readString(configDir.resolve("session"))
+            return url to token
+        } catch (e: Exception) {
+            return null to null // Probably has not configured the CLI yet.
+        }
+    }
+
+    /**
+     * Return the config directory used by the CLI.
+     */
+    private fun getConfigDir(): Path {
+        var dir = System.getenv("CODER_CONFIG_DIR")
+        if (!dir.isNullOrBlank()) {
+            return Path.of(dir)
+        }
+        // The Coder CLI uses https://github.com/kirsle/configdir so this should
+        // match how it behaves.
+        return when(getOS()) {
+            OS.WINDOWS -> Paths.get(System.getenv("APPDATA"), "coderv2")
+            OS.MAC -> Paths.get(System.getenv("HOME"), "Library/Application Support/coderv2")
+            else -> {
+                dir = System.getenv("XDG_CACHE_HOME")
+                if (!dir.isNullOrBlank()) {
+                    return Paths.get(dir, "coderv2")
+                }
+                return Paths.get(System.getenv("HOME"), ".config/coderv2")
+            }
+        }
+    }
+
     private fun updateWorkspaceActions() {
         goToDashboardAction.isEnabled = coderClient.isReady
         createWorkspaceAction.isEnabled = coderClient.isReady
@@ -440,8 +508,13 @@ class CoderWorkspacesStepView(val enableNextButtonCallback: (Boolean) -> Unit) :
 
     private fun askToken(openBrowser: Boolean): String? {
         val getTokenUrl = localWizardModel.coderURL.toURL().withPath("/login?redirect=%2Fcli-auth")
-        if (openBrowser) {
+        if (openBrowser && !localWizardModel.useExistingToken) {
             BrowserUtil.browse(getTokenUrl)
+        } else if (localWizardModel.useExistingToken) {
+            val (url, token) = readConfig()
+            if (url == localWizardModel.coderURL && !token.isNullOrBlank()) {
+                localWizardModel.token = token
+            }
         }
         var tokenFromUser: String? = null
         ApplicationManager.getApplication().invokeAndWait({

src/main/resources/messages/CoderGatewayBundle.properties

@@ -3,6 +3,8 @@ gateway.connector.description=Connects to a Coder Workspace dev environment so t
 gateway.connector.action.text=Connect to Coder
 gateway.connector.view.login.documentation.action=Learn more about Coder
 gateway.connector.view.login.url.label=URL:
+gateway.connector.view.login.existing-token.label=Use existing token
+gateway.connector.view.login.existing-token.tooltip=Checking "{0}" will prevent the browser from automatically being launched for generating a token. Additionally, if there is a token already configured on disk for this URL via the CLI it will be used automatically.
 gateway.connector.view.login.token.dialog=Paste your token here:
 gateway.connector.view.login.token.label=Session Token:
 gateway.connector.view.coder.workspaces.header.text=Coder Workspaces
@@ -28,4 +30,4 @@ gateway.connector.recentconnections.title=Recent Coder Workspaces
 gateway.connector.recentconnections.new.wizard.button.tooltip=Open a new Coder Workspace
 gateway.connector.recentconnections.remove.button.tooltip=Remove from Recent Connections
 gateway.connector.recentconnections.terminal.button.tooltip=Open SSH Web Terminal
-gateway.connector.coder.connection.provider.title=Connecting to Coder workspace...
+gateway.connector.coder.connection.provider.title=Connecting to Coder workspace...