Add Claude Code provider support

src-tauri/src/command.rs

@@ -761,12 +761,205 @@ pub async fn write_file_async(path: String, content: Option<Vec<u8>>, source_pat
 #[tauri::command]
 pub fn get_file_metadata(path: String) -> Result<serde_json::Value, String> {
     use std::fs;
-    
+
     let metadata = fs::metadata(&path).map_err(|e| e.to_string())?;
-    
+
     Ok(serde_json::json!({
         "size": metadata.len(),
         "isFile": metadata.is_file(),
         "isDirectory": metadata.is_dir()
     }))
 }
+
+/// Check if Claude Code CLI is installed and authenticated
+#[tauri::command]
+pub fn check_claude_code_available() -> Result<serde_json::Value, String> {
+    use std::process::Command;
+
+    // Check if claude CLI exists
+    let version_output = Command::new("claude")
+        .arg("--version")
+        .output();
+
+    match version_output {
+        Ok(output) if output.status.success() => {
+            let version = String::from_utf8_lossy(&output.stdout).trim().to_string();
+
+            // Check if credentials file exists
+            let home = std::env::var("HOME").unwrap_or_default();
+            let credentials_path = format!("{}/.claude/.credentials.json", home);
+            let has_credentials = std::path::Path::new(&credentials_path).exists();
+
+            Ok(serde_json::json!({
+                "available": true,
+                "version": version,
+                "authenticated": has_credentials
+            }))
+        }
+        _ => {
+            Ok(serde_json::json!({
+                "available": false,
+                "version": null,
+                "authenticated": false
+            }))
+        }
+    }
+}
+
+/// Stream a response from Claude Code CLI
+/// This spawns the claude CLI process and emits events as responses stream in
+#[tauri::command]
+pub async fn stream_claude_code_response(
+    app_handle: AppHandle,
+    request_id: String,
+    prompt: String,
+    system_prompt: Option<String>,
+    model: Option<String>,
+    disable_project_context: Option<bool>,
+) -> Result<(), String> {
+    use std::io::{BufRead, BufReader};
+    use std::process::{Command, Stdio};
+
+    // Build the command
+    let mut cmd = Command::new("claude");
+    cmd.arg("-p") // Print mode (non-interactive)
+        .arg("--output-format")
+        .arg("stream-json")
+        .arg("--verbose")
+        .arg("--permission-mode")
+        .arg("bypassPermissions"); // Auto-approve for chat use
+
+    // If we want to disable project context, run without tools and from home directory
+    // This makes Claude act as a general assistant without codebase awareness
+    let disable_context = disable_project_context.unwrap_or(true);
+    if disable_context {
+        // Disable all tools to prevent reading project files
+        cmd.arg("--tools").arg("");
+        // Only load user settings, not project-specific ones
+        cmd.arg("--setting-sources").arg("user");
+        // Run from home directory to avoid picking up any project context
+        if let Ok(home) = std::env::var("HOME") {
+            cmd.current_dir(home);
+        }
+    }
+
+    // Add model if specified
+    if let Some(m) = model {
+        cmd.arg("--model").arg(m);
+    }
+
+    // Add system prompt - use append to keep Claude Code's base capabilities
+    // but add our general assistant instructions
+    if let Some(sp) = system_prompt {
+        if !sp.is_empty() {
+            cmd.arg("--append-system-prompt").arg(sp);
+        }
+    } else if disable_context {
+        // Default prompt for general assistant mode
+        cmd.arg("--append-system-prompt")
+            .arg("You are a helpful general assistant. Answer questions directly and helpfully. Do not reference any specific project or codebase context.");
+    }
+
+    // Add the prompt as the final argument
+    cmd.arg(&prompt);
+
+    // Set up stdio
+    cmd.stdout(Stdio::piped())
+        .stderr(Stdio::piped());
+
+    // Spawn the process
+    let mut child = cmd.spawn().map_err(|e| format!("Failed to spawn claude CLI: {}", e))?;
+
+    let stdout = child.stdout.take().ok_or("Failed to capture stdout")?;
+    let stderr = child.stderr.take().ok_or("Failed to capture stderr")?;
+
+    let request_id_clone = request_id.clone();
+    let app_handle_clone = app_handle.clone();
+
+    // Spawn a thread to read stdout and emit events
+    std::thread::spawn(move || {
+        let reader = BufReader::new(stdout);
+
+        for line in reader.lines() {
+            match line {
+                Ok(json_line) => {
+                    if !json_line.is_empty() {
+                        // Emit each JSON line as an event
+                        let _ = app_handle_clone.emit(
+                            &format!("claude-code-stream-{}", request_id_clone),
+                            serde_json::json!({
+                                "type": "data",
+                                "data": json_line
+                            })
+                        );
+                    }
+                }
+                Err(e) => {
+                    let _ = app_handle_clone.emit(
+                        &format!("claude-code-stream-{}", request_id_clone),
+                        serde_json::json!({
+                            "type": "error",
+                            "error": format!("Failed to read line: {}", e)
+                        })
+                    );
+                    break;
+                }
+            }
+        }
+    });
+
+    // Spawn a thread to read stderr
+    let request_id_clone2 = request_id.clone();
+    let app_handle_clone2 = app_handle.clone();
+
+    std::thread::spawn(move || {
+        let reader = BufReader::new(stderr);
+        let mut stderr_content = String::new();
+
+        for line in reader.lines() {
+            if let Ok(l) = line {
+                stderr_content.push_str(&l);
+                stderr_content.push('\n');
+            }
+        }
+
+        if !stderr_content.is_empty() {
+            let _ = app_handle_clone2.emit(
+                &format!("claude-code-stream-{}", request_id_clone2),
+                serde_json::json!({
+                    "type": "stderr",
+                    "data": stderr_content
+                })
+            );
+        }
+    });
+
+    // Wait for the process to complete in a separate task
+    let request_id_clone3 = request_id.clone();
+    let app_handle_clone3 = app_handle.clone();
+
+    tauri::async_runtime::spawn_blocking(move || {
+        match child.wait() {
+            Ok(status) => {
+                let _ = app_handle_clone3.emit(
+                    &format!("claude-code-stream-{}", request_id_clone3),
+                    serde_json::json!({
+                        "type": "done",
+                        "exitCode": status.code()
+                    })
+                );
+            }
+            Err(e) => {
+                let _ = app_handle_clone3.emit(
+                    &format!("claude-code-stream-{}", request_id_clone3),
+                    serde_json::json!({
+                        "type": "error",
+                        "error": format!("Process error: {}", e)
+                    })
+                );
+            }
+        }
+    });
+
+    Ok(())
+}

src-tauri/src/lib.rs

@@ -429,6 +429,8 @@ pub fn run() {
             command::get_instance_name,
             command::write_file_async,
             command::get_file_metadata,
+            command::check_claude_code_available,
+            command::stream_claude_code_response,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");

src-tauri/src/migrations.rs

@@ -2458,5 +2458,20 @@ You have full access to bash commands on the user''''s computer. If you write a
                     ('selected_model_configs_compare', '["openrouter::anthropic/claude-opus-4.5"]');
             "#,
         },
+        Migration {
+            version: 132,
+            description: "add claude code provider model for using claude code subscription",
+            kind: MigrationKind::Up,
+            sql: r#"
+                -- Add Claude (via Claude Code) model
+                -- This uses the local Claude Code CLI and subscription instead of an API key
+                INSERT OR REPLACE INTO models (id, display_name, is_enabled, supported_attachment_types) VALUES
+                    ('claude-code::default', 'Claude (via Claude Code)', 1, '["text", "webpage"]');
+
+                -- Add Claude (via Claude Code) model config
+                INSERT OR REPLACE INTO model_configs (author, id, model_id, display_name, system_prompt, is_default, new_until) VALUES
+                    ('system', 'claude-code::default', 'claude-code::default', 'Claude (via Claude Code)', '', 0, '2026-01-15 00:00:00');
+            "#,
+        },
     ];
 }