;;; ai/agents.el -*- lexical-binding: t; -*-

;;; ============================================================================
;;; Claude Code Configuration
;;; ============================================================================

(use-package! claude-code
  :defer t
  :config
  ;; Unset CLAUDECODE to allow running Claude Code inside Emacs sub-processes
  (setenv "CLAUDECODE" nil)
  (setq claude-code-program "ccr"
        claude-code-program-switches '("code" "--dangerously-skip-permissions"))

  ;; Use Eat backend
  (setq claude-code-terminal-backend 'eat
        ;; Emacs-style editing in Claude buffer: RET inserts newline, S-RET sends
        claude-code-newline-keybinding-style 'shift-return-to-send)

  ;; Enable global mode
  (claude-code-mode 1)

  ;; Emacs-style prefix key (works without Doom/Evil leader keys)
  (global-set-key (kbd "C-c c") claude-code-command-map)

  ;; Set Doom leader keybindings
  (map! :leader
        (:prefix ("C" . "claude-code")
         :desc "Start Claude" "c" #'claude-code
         :desc "Start in directory" "d" #'claude-code-start-in-directory
         :desc "Continue conversation" "C" #'claude-code-continue
         :desc "Resume session" "R" #'claude-code-resume
         :desc "New instance" "i" #'claude-code-new-instance
         :desc "Kill Claude" "k" #'claude-code-kill
         :desc "Kill all instances" "K" #'claude-code-kill-all
         :desc "Send command" "s" #'claude-code-send-command
         :desc "Send command with context" "x" #'claude-code-send-command-with-context
         :desc "Send region/buffer" "r" #'claude-code-send-region
         :desc "Send buffer file" "o" #'claude-code-send-buffer-file
         :desc "Fix error at point" "e" #'claude-code-fix-error-at-point
         :desc "Toggle window" "t" #'claude-code-toggle
         :desc "Switch to buffer" "b" #'claude-code-switch-to-buffer
         :desc "Select buffer" "B" #'claude-code-select-buffer
         :desc "Toggle read-only" "z" #'claude-code-toggle-read-only-mode
         :desc "Cycle mode" "M" #'claude-code-cycle-mode
         :desc "Transient menu" "m" #'claude-code-transient
         :desc "Slash commands" "/" #'claude-code-slash-commands
         :desc "Fork conversation" "f" #'claude-code-fork
         :desc "Send return" "y" #'claude-code-send-return
         :desc "Send escape" "n" #'claude-code-send-escape
         :desc "Send 1" "1" #'claude-code-send-1
         :desc "Send 2" "2" #'claude-code-send-2
         :desc "Send 3" "3" #'claude-code-send-3))

  ;; Optional: Configure window display (side window on right)
  (add-to-list 'display-buffer-alist
               '("^\\*claude"
                 (display-buffer-in-side-window)
                 (side . right)
                 (window-width . 90)))

  ;; Optional: Enable auto-revert for files modified by Claude
  (global-auto-revert-mode 1)

  ;; Optional: Increase vterm scrollback for long conversations
  (add-hook 'claude-code-start-hook
            (lambda ()
              (when (eq claude-code-terminal-backend 'vterm)
                (setq-local vterm-max-scrollback 100000)))))

;;; ============================================================================
;;; Gemini CLI Configuration
;;; ============================================================================

(use-package! gemini-cli
  :defer t
  :config
  ;; Set the Gemini executable
  (setq gemini-cli-program "gemini"
        gemini-cli-program-switches nil)

  ;; Use Eat backend
  (setq gemini-cli-terminal-backend 'eat
        ;; Emacs-style editing in Gemini buffer: RET inserts newline, S-RET sends
        gemini-cli-newline-keybinding-style 'shift-return-to-send)

  ;; Enable global mode
  (gemini-cli-mode 1)

  ;; Emacs-style prefix key
  (global-set-key (kbd "C-c g") gemini-cli-command-map)

  ;; Set Doom leader keybindings under SPC G
  (map! :leader
        (:prefix ("G" . "gemini-cli")
         :desc "Start Gemini" "c" #'gemini-cli
         :desc "Start in directory" "d" #'gemini-cli-start-in-directory
         :desc "Continue conversation" "C" #'gemini-cli-continue
         :desc "Resume session" "R" #'gemini-cli-resume
         :desc "New instance" "i" #'gemini-cli-new-instance
         :desc "Kill Gemini" "k" #'gemini-cli-kill
         :desc "Kill all instances" "K" #'gemini-cli-kill-all
         :desc "Send command" "s" #'gemini-cli-send-command
         :desc "Send command with context" "x" #'gemini-cli-send-command-with-context
         :desc "Send region/buffer" "r" #'gemini-cli-send-region
         :desc "Send buffer file" "o" #'gemini-cli-send-buffer-file
         :desc "Fix error at point" "e" #'gemini-cli-fix-error-at-point
         :desc "Toggle window" "t" #'gemini-cli-toggle
         :desc "Switch to buffer" "b" #'gemini-cli-switch-to-buffer
         :desc "Select buffer" "B" #'gemini-cli-select-buffer
         :desc "Toggle read-only" "z" #'gemini-cli-toggle-read-only-mode
         :desc "Cycle mode" "M" #'gemini-cli-cycle-mode
         :desc "Transient menu" "m" #'gemini-cli-transient
         :desc "Slash commands" "/" #'gemini-cli-slash-commands
         :desc "Fork conversation" "f" #'gemini-cli-fork
         :desc "Send return" "y" #'gemini-cli-send-return
         :desc "Send escape" "n" #'gemini-cli-send-escape
         :desc "Send 1" "1" #'gemini-cli-send-1
         :desc "Send 2" "2" #'gemini-cli-send-2
         :desc "Send 3" "3" #'gemini-cli-send-3))

  ;; Optional: Configure window display (side window on right)
  (add-to-list 'display-buffer-alist
               '("^\\*gemini"
                 (display-buffer-in-side-window)
                 (side . right)
                 (window-width . 90)))

  ;; Optional: Increase vterm scrollback for long conversations
  (add-hook 'gemini-cli-start-hook
            (lambda ()
              (when (eq gemini-cli-terminal-backend 'vterm)
                (setq-local vterm-max-scrollback 100000)))))