(require 'which-func)

(require 'savehist)

(require 'subr-x)

(defvar ai-code--harness-loading)

(require 'ai-code-input)

(require 'ai-code-prompt-mode)

(let ((ai-code--harness-loading t))

(require 'ai-code-change))

(declare-function ai-code--insert-prompt "ai-code-prompt-mode")

(declare-function ai-code--compose-question-brief

"ai-code-change" (&rest plist))

(declare-function ai-code--detect-todo-info

"ai-code-change" (region-active))

(declare-function ai-code--get-clipboard-text "ai-code-utils")

(declare-function ai-code-call-gptel-sync "ai-code-prompt-mode")

(declare-function ai-code--ensure-files-directory "ai-code-utils")

(declare-function ai-code--git-root "ai-code-utils" (&optional dir))

(declare-function ai-code--format-repo-context-info "ai-code-utils")

(declare-function ai-code--pull-or-review-action-choice "ai-code-github")

(declare-function ai-code--pull-or-review-source-instruction "ai-code-github"

(review-source &optional review-mode))

(declare-function org-current-level "org")

(declare-function org-roam-db-update-file "org-roam-db" (&optional file-path no-require))

(declare-function org-roam-db-sync "org-roam-db" (&optional force))

(declare-function dired-get-filename "dired" (&optional localp no-error-if-not-filep))

(declare-function dired-get-marked-files "dired"

(&optional localp arg filter distinguish-one-marked error-if-none-p))

(declare-function ai-code-implement-todo

"ai-code-change" (arg &optional default-action))

(defvar ai-code--repo-context-info)

(defvar org-roam-directory)

(defvar ai-code-note-request-history nil

"Minibuffer history for note requests.")

(defun ai-code--ensure-note-request-history ()

"Register persistent minibuffer history for note requests.

(add-to-list 'savehist-additional-variables 'ai-code-note-request-history))

(ai-code--ensure-note-request-history)

(defconst ai-code-discussion--question-only-note

"Note: This is a question only - please do not modify the code."

"Prompt note for question-only requests.")

(defconst ai-code-discussion--selected-region-note

"Note: This is a question about the selected region - please do not modify the code."

"Prompt note for question-only requests about the selected region.")

(defconst ai-code-discussion--exception-investigation-boundaries

"Investigate first. Do not make code changes."

"Boundaries for exception investigation prompts.")

(defconst ai-code-discussion--exception-investigation-note

(concat

ai-code-discussion--question-only-note

"\n"

"Report root cause, relevant evidence, and candidate next steps. "

"Include at least one candidate next step that explains how to fix the issue.")

"Instruction for exception investigation prompts.")

(defconst ai-code-discussion--explain-selected-files-prefix

"Please explain the selected files or directories."

"Prompt prefix for explaining selected files or directories.")

(defconst ai-code-discussion--explain-file-at-path-prefix

"Please explain the file at path @"

"Prompt prefix for explaining a file selected from Dired.")

(defconst ai-code-discussion--explain-directory-at-path-prefix

"Please explain the directory at path @"

"Prompt prefix for explaining a directory selected from Dired.")

(defconst ai-code-discussion--explain-code-prefix

"Please explain the following code:"

"Prompt prefix for explaining a selected region.")

(defconst ai-code-discussion--explain-symbol-prefix

"Please explain the symbol '"

"Prompt prefix for explaining a symbol.")

(defconst ai-code-discussion--explain-line-prefix

"Please explain the following line of code:"

"Prompt prefix for explaining the current line.")

(defconst ai-code-discussion--explain-function-prefix

"Please explain the function '"

"Prompt prefix for explaining the current function.")

(defconst ai-code-discussion--explain-file-prefix

"Please explain the following file:"

"Prompt prefix for explaining the current file.")

(defconst ai-code-discussion--explain-files-prefix

"Please explain the following files:"

"Prompt prefix for explaining visible files.")

(defconst ai-code-discussion--explain-git-repo-prefix

"Please explain the current git repository:"

"Prompt prefix for explaining the current repository.")

(defconst ai-code-discussion--explain-code-change-pr-prefix

"Please explain the code change in pull request:"

"Prompt prefix for explaining a pull request code change.")

(defconst ai-code-discussion--explain-code-change-branch-range-prefix

"Please explain the code change between branches:"

"Prompt prefix for explaining a branch range code change.")

(defconst ai-code-discussion--explain-code-change-commit-prefix

"Please explain the code change introduced by commit:"

"Prompt prefix for explaining a commit code change.")

(defconst ai-code-discussion--explain-code-change-focus-note

"4. Focus on understanding the change. Do not make code changes."

"Shared final instruction for code change explanation prompts.")

(defconst ai-code-discussion--explain-prompt-prefixes

(list ai-code-discussion--explain-selected-files-prefix

ai-code-discussion--explain-file-at-path-prefix

ai-code-discussion--explain-directory-at-path-prefix

ai-code-discussion--explain-code-prefix

ai-code-discussion--explain-symbol-prefix

ai-code-discussion--explain-line-prefix

ai-code-discussion--explain-function-prefix

ai-code-discussion--explain-file-prefix

ai-code-discussion--explain-files-prefix

ai-code-discussion--explain-git-repo-prefix

ai-code-discussion--explain-code-change-pr-prefix

ai-code-discussion--explain-code-change-branch-range-prefix

ai-code-discussion--explain-code-change-commit-prefix)

"Known explain prompt prefixes generated by discussion commands.")

(defun ai-code-ask-question (arg)

"Generate prompt to ask questions about specific code.

(interactive "P")

;; DONE: similar to ai-code-code-change, when todo-info is available, call ai-code-implement-todo

(cond

((derived-mode-p 'dired-mode)

(let ((clipboard-context (when arg (ai-code--get-clipboard-text))))

(ai-code--ask-question-dired clipboard-context)))

(t

(let ((todo-info (when buffer-file-name

(ai-code--detect-todo-info (region-active-p)))))

(if todo-info

(ai-code-implement-todo arg "Ask question")

(let ((clipboard-context (when arg (ai-code--get-clipboard-text))))

(ai-code--ask-question-file clipboard-context)))))))

(defun ai-code--ask-question-dired (clipboard-context)

"Handle ask question for Dired buffer.

(let* ((all-marked (dired-get-marked-files))

(file-at-point (dired-get-filename nil t))

(truly-marked (remove file-at-point all-marked))

(has-marks (> (length truly-marked) 0))

(context-files (cond

(has-marks truly-marked)

(file-at-point (list file-at-point))

(t nil)))

(git-relative-files (when context-files

(ai-code--get-git-relative-paths context-files)))

(scope-string

(if git-relative-files

(concat "Selected files/directories:\n"

(mapconcat (lambda (f) (concat "@" f))

git-relative-files "\n"))

(format "Current directory: %s" default-directory)))

(prompt-label (cond

((and clipboard-context

(string-match-p "\\S-" clipboard-context))

(if has-marks

"Question about marked files/directories (clipboard context): "

(if file-at-point

(format "Question about %s (clipboard context): " (file-name-nondirectory file-at-point))

"General question about directory (clipboard context): ")))

(has-marks "Question about marked files/directories: ")

(file-at-point (format "Question about %s: " (file-name-nondirectory file-at-point)))

(t "General question about directory: ")))

(question (ai-code-read-string prompt-label ""))

(repo-context-string (ai-code--format-repo-context-info))

(final-prompt

(ai-code--compose-question-brief

:goal question

:scope scope-string

:context repo-context-string

:clipboard-context (and clipboard-context

(string-match-p "\\S-" clipboard-context)

clipboard-context)

:instruction ai-code-discussion--question-only-note)))

(ai-code--insert-prompt final-prompt)))

(defun ai-code--ask-question-file (clipboard-context)

"Handle ask question for regular file buffer.

(let* ((file-extension (when buffer-file-name

(file-name-extension buffer-file-name)))

(is-diff-or-patch (and file-extension

(member file-extension '("diff" "patch"))))

(function-name (unless is-diff-or-patch

(which-function)))

(region-active (region-active-p))

(region-text (when region-active

(buffer-substring-no-properties (region-beginning) (region-end))))

(region-location-info (when region-active

(ai-code--get-region-location-info (region-beginning) (region-end))))

(prompt-label

(cond

((and clipboard-context

(string-match-p "\\S-" clipboard-context))

(cond

(region-active

(if function-name

(format "Question about selected code in function %s (clipboard context): " function-name)

"Question about selected code (clipboard context): "))

(function-name

(format "Question about function %s (clipboard context): " function-name))

(buffer-file-name

(format "General question about %s (clipboard context): " (file-name-nondirectory buffer-file-name)))

(t "General question (clipboard context): ")))

(region-active

(if function-name

(format "Question about selected code in function %s: " function-name)

"Question about selected code: "))

(function-name

(format "Question about function %s: " function-name))

(buffer-file-name

(format "General question about %s: " (file-name-nondirectory buffer-file-name)))

(t "General question: ")))

(question (ai-code-read-string prompt-label ""))

(files-context-string (ai-code--get-context-files-string))

(repo-context-string (ai-code--format-repo-context-info))

(scope-string

(concat

(if buffer-file-name

(format "Current file: %s" buffer-file-name)

(format "Current buffer: %s" (buffer-name)))

(when region-text

(concat "\nSelected region:\n"

(when region-location-info

(concat region-location-info "\n"))

region-text))

(when function-name

(format "\nFunction: %s" function-name))

files-context-string))

(final-prompt

(ai-code--compose-question-brief

:goal question

:scope scope-string

:context repo-context-string

:clipboard-context (and clipboard-context

(string-match-p "\\S-" clipboard-context)

clipboard-context)

:instruction (if region-text

ai-code-discussion--selected-region-note

ai-code-discussion--question-only-note))))

(ai-code--insert-prompt final-prompt)))

(defun ai-code--get-git-relative-paths (file-paths)

"Convert absolute FILE-PATHS to git repository relative paths.

(when file-paths

(let ((git-root (ai-code--git-root)))

(when git-root

(mapcar (lambda (file-path)

(file-relative-name file-path git-root))

file-paths)))))

(defun ai-code--get-region-location-info (region-beginning region-end)

"Compute region location information for the active region.

(when (and region-beginning region-end buffer-file-name)

(let* ((region-end-line (line-number-at-pos region-end))

(region-start-line (line-number-at-pos region-beginning))

(git-relative-path (car (ai-code--get-git-relative-paths (list buffer-file-name))))

(region-location-info (when (and git-relative-path region-start-line region-end-line)

(format "%s#L%d-L%d" git-relative-path region-start-line region-end-line))))

region-location-info)))

(defun ai-code-investigate-exception (arg)

"Generate prompt to investigate exceptions or errors in code.

(interactive "P")

(let* ((clipboard-content (when arg

(condition-case nil

(current-kill 0)

(error nil))))

(compilation-buffer (get-buffer "*compilation*"))

(compilation-content (when (and compilation-buffer

(get-buffer-window compilation-buffer)

(not arg))

(with-current-buffer compilation-buffer

(buffer-substring-no-properties (point-min) (point-max)))))

(region-text (when (region-active-p)

(buffer-substring-no-properties (region-beginning) (region-end))))

(buffer-file buffer-file-name)

(full-buffer-context (when (and (not buffer-file) (not region-text))

(buffer-substring-no-properties (point-min) (point-max))))

(function-name (which-function))

(files-context-string (ai-code--get-context-files-string))

(repo-context-string (ai-code--format-repo-context-info))

(diagnostic-context

(if full-buffer-context

full-buffer-context

(let ((context-blocks nil))

(when clipboard-content

(push (concat "Clipboard context (error/exception):\n" clipboard-content)

context-blocks))

(when compilation-content

(push (concat "Compilation output:\n" compilation-content)

context-blocks))

(when region-text

(push (concat "Selected code:\n" region-text)

context-blocks))

(when context-blocks

(mapconcat #'identity (nreverse context-blocks) "\n\n")))))

(default-question

(concat

"Investigate this error. Explain the likely root cause and suggest "

"candidate next steps, including how to fix it: "))

(prompt-label

(cond

(clipboard-content

"Investigate error from clipboard: ")

(compilation-content

"Investigate compilation error: ")

(full-buffer-context

"Investigate exception in current buffer: ")

(region-text

(if function-name

(format "Investigate exception in function %s: " function-name)

"Investigate selected exception: "))

(function-name

(format "Investigate exceptions in function %s: " function-name))

(t "Investigate exceptions in code: ")))

(initial-prompt (ai-code-read-string prompt-label default-question))

(scope-string

(concat

(if buffer-file

(format "Current file: %s" buffer-file)

(format "Current buffer: %s" (buffer-name)))

(when function-name

(format "\nFunction: %s" function-name))

files-context-string))

(context-string

(string-trim

(concat

(or diagnostic-context "")

(when (and diagnostic-context repo-context-string)

"\n\n")

repo-context-string)))

(final-prompt

(ai-code--compose-question-brief

:goal initial-prompt

:scope scope-string

:context context-string

:boundaries ai-code-discussion--exception-investigation-boundaries

:instruction ai-code-discussion--exception-investigation-note)))

(ai-code--insert-prompt final-prompt)))

(defun ai-code-explain ()

"Generate prompt to explain code at different levels.

(interactive)

(cond

;; Handle dired buffer

((derived-mode-p 'dired-mode)

(ai-code--explain-dired))

;; Handle region selection

((region-active-p)

(ai-code--explain-region))

;; Handle regular file buffer

(t (ai-code--explain-with-scope-selection))))

(defun ai-code--explain-dired ()

"Handle explain for Dired buffer."

(let* ((file-at-point (dired-get-filename nil t))

(all-marked (dired-get-marked-files))

(has-marked-files (> (length all-marked) 1))

(context-files (if has-marked-files

all-marked

(when file-at-point

(list file-at-point))))

(git-relative-paths (when context-files

(ai-code--get-git-relative-paths context-files)))

(files-context-string (when git-relative-paths

(concat "\nFiles:\n"

(mapconcat (lambda (path) (concat "@" path))

git-relative-paths

"\n"))))

(file-type (if (and file-at-point (file-directory-p file-at-point))

"directory"

"file"))

(path-prefix (if (string-equal file-type "directory")

ai-code-discussion--explain-directory-at-path-prefix

ai-code-discussion--explain-file-at-path-prefix))

(initial-prompt (cond

(has-marked-files

(format "%s\n\nProvide a clear explanation of what these files or directories contain, their purpose, and their role in the project structure.%s"

ai-code-discussion--explain-selected-files-prefix

(or files-context-string "")))

((car git-relative-paths)

(format "%s%s.\n\nProvide a clear explanation of what this %s contains, its purpose, and its role in the project structure.%s"

path-prefix

(car git-relative-paths)

file-type

(or files-context-string "")))

(t "No file or directory found at cursor point."))))

(if git-relative-paths

(ai-code--confirm-and-send "Prompt: " initial-prompt)

(ai-code--insert-prompt initial-prompt))))

(defun ai-code--explain-region ()

"Explain the selected region with function/file context."

(let* ((region-text (buffer-substring-no-properties (region-beginning) (region-end)))

(function-name (which-function))

(context-info (if function-name

(format "Function: %s" function-name)

""))

(files-context-string (ai-code--get-context-files-string))

(initial-prompt (format "%s\n\n%s\n\n%s%s%s\n\nProvide a clear explanation of what this code does, how it works, and its purpose within the context."

ai-code-discussion--explain-code-prefix

region-text

context-info

(if function-name "\n" "")

files-context-string)))

(ai-code--confirm-and-send "Prompt: " initial-prompt)))

(defun ai-code--explain-with-scope-selection ()

"Prompt user to select explanation scope and explain accordingly."

(let* ((choices '("symbol" "line" "function" "file" "files visible"

"git repository" "code change"))

(scope (completing-read "Select scope to explain: " choices nil t)))

(pcase scope

("symbol" (ai-code--explain-symbol))

("line" (ai-code--explain-line))

("function" (ai-code--explain-function))

("file" (ai-code--explain-file))

("files visible" (ai-code--explain-files-visible))

("git repository" (ai-code--explain-git-repo))

("code change" (ai-code--explain-code-change)))))

(defun ai-code--explain-code-change-source-instruction (review-source)

"Return a PR explanation source instruction for REVIEW-SOURCE."

(if (fboundp 'ai-code--pull-or-review-source-instruction)

(ai-code--pull-or-review-source-instruction review-source 'explain-code-change)

"Inspect the pull request diff and relevant metadata to understand the change."))

(defun ai-code--ensure-explain-code-change-review-source (review-source)

"Return REVIEW-SOURCE or prompt for one when needed."

(or review-source

(progn

(require 'ai-code-git nil t)

(if (fboundp 'ai-code--pull-or-review-action-choice)

(ai-code--pull-or-review-action-choice)

(let* ((action-alist '(("Use GitHub MCP server" . github-mcp)

("Use gh CLI tool" . gh-cli)))

(choice (completing-read "Select review source: "

action-alist

nil t nil nil

"Use GitHub MCP server")))

(alist-get choice action-alist nil nil #'string=))))))

(defun ai-code--explain-code-change-insert-prompt (initial-prompt)

"Read and insert an explanation prompt starting from INITIAL-PROMPT."

(ai-code--confirm-and-send "Prompt: " initial-prompt))

(defun ai-code--format-code-change-explanation-outline (step-1 step-2 step-3)

"Return shared code-change explanation outline using STEP-1, STEP-2, and STEP-3."

(mapconcat #'identity

(list "Explanation Steps:"

(concat "1. " step-1)

(concat "2. " step-2)

(concat "3. " step-3)

ai-code-discussion--explain-code-change-focus-note)

"\n"))

(defun ai-code--explain-code-change (&optional review-source)

"Explain a code change from a PR, branch range, or commit.

(let* ((choices '(("GitHub PR" . github-pr)

("base..branch" . branch-range)

("commit" . commit)))

(selection (completing-read "Select code change source: " choices nil t))

(code-change-source (alist-get selection choices nil nil #'string=)))

(pcase code-change-source

('github-pr

(ai-code--explain-code-change-from-github-pr

(ai-code--ensure-explain-code-change-review-source review-source)))

('branch-range

(ai-code--explain-code-change-from-branch-range))

('commit

(ai-code--explain-code-change-from-commit))

(_

(user-error "Unknown code change source: %s" selection)))))

(defun ai-code--explain-code-change-from-github-pr (review-source)

"Build a prompt to explain a code change from a GitHub PR using REVIEW-SOURCE."

(let* ((pr-url (ai-code-read-string "Pull request URL: "))

(source-instruction

(ai-code--explain-code-change-source-instruction review-source))

(repo-context-string (ai-code--format-repo-context-info))

(initial-prompt

(format "%s %s

ai-code-discussion--explain-code-change-pr-prefix

pr-url

source-instruction

(ai-code--format-code-change-explanation-outline

"Summarize the overall goal of the code change."

"Explain the main files, functions, and behavior changes in the PR."

"Highlight important design decisions, risks, and follow-up considerations.")

repo-context-string)))

(ai-code--explain-code-change-insert-prompt initial-prompt)))

(defun ai-code-explain-code-change (&optional review-source)

"Explain a code change using shared discussion helpers.

(interactive)

(ai-code--explain-code-change review-source))

(defun ai-code--explain-code-change-from-branch-range ()

"Build a prompt to explain a code change from BASE..BRANCH."

(let ((git-root (ai-code--git-root)))

(unless git-root

(user-error "Not in a git repository"))

(let* ((base-branch (ai-code-read-string "Base branch: "))

(branch-name (ai-code-read-string "Branch to explain: "))

(repo-context-string (ai-code--format-repo-context-info))

(explanation-outline

(ai-code--format-code-change-explanation-outline

"The overall purpose of this change set."

"The most important files, functions, and logic changes."

"The expected behavior impact, migration notes, and risks."))

(initial-prompt

(format "%s

ai-code-discussion--explain-code-change-branch-range-prefix

base-branch

branch-name

git-root

base-branch

branch-name

explanation-outline

repo-context-string)))

(ai-code--explain-code-change-insert-prompt initial-prompt))))

(defun ai-code--explain-code-change-from-commit ()

"Build a prompt to explain a code change from a specific commit."

(let ((git-root (ai-code--git-root)))

(unless git-root

(user-error "Not in a git repository"))

(let* ((commit-hash (ai-code-read-string "Commit hash: "))

(repo-context-string (ai-code--format-repo-context-info))

(explanation-outline

(ai-code--format-code-change-explanation-outline

"The problem this commit appears to address."

"The key code paths and behavior changes introduced by the commit."

"Any noteworthy implementation details, risks, or trade-offs."))

(initial-prompt

(format "%s %s

ai-code-discussion--explain-code-change-commit-prefix

commit-hash

git-root

commit-hash

explanation-outline

repo-context-string)))

(ai-code--explain-code-change-insert-prompt initial-prompt))))

(defun ai-code--explain-symbol ()

"Explain the symbol at point."

(let* ((symbol (thing-at-point 'symbol t))

(function-name (which-function)))

(unless symbol

(user-error "No symbol at point"))

(let* ((initial-prompt (format "%s%s' in the context of:%s\nFile: %s\n\nExplain what this symbol represents, its type, purpose, and how it's used in this context."

ai-code-discussion--explain-symbol-prefix

symbol

(if function-name

(format "\nFunction: %s" function-name)

"")

(or buffer-file-name "current buffer"))))

(ai-code--confirm-and-send "Prompt: " initial-prompt))))

(defun ai-code--explain-line ()

"Explain the current line."

(let* ((line-text (string-trim (thing-at-point 'line t)))

(line-number (line-number-at-pos))

(function-name (which-function)))

(let* ((initial-prompt (format "%s\n\nLine %d: %s\n\n%sFile: %s\n\nExplain what this line does, its purpose, and how it fits into the surrounding code."

ai-code-discussion--explain-line-prefix

line-number

line-text

(if function-name

(format "Function: %s\n" function-name)

"")

(or buffer-file-name "current buffer"))))

(ai-code--confirm-and-send "Prompt: " initial-prompt))))

(defun ai-code--explain-function ()

"Explain the current function."

(let ((function-name (which-function)))

(unless function-name

(user-error "Not inside a function"))

(let* ((initial-prompt (format "%s%s':

ai-code-discussion--explain-function-prefix

function-name

(or buffer-file-name "current buffer"))))

(ai-code--confirm-and-send "Prompt: " initial-prompt))))

(defun ai-code--explain-file ()

"Explain the current file."

(let ((file-name (or buffer-file-name "current buffer")))

(let* ((initial-prompt (format "%s\nFile: %s\nProvide an overview of this file's purpose, its main components, key functions, and how it fits into the larger codebase architecture."

ai-code-discussion--explain-file-prefix

file-name)))

(ai-code--confirm-and-send "Prompt: " initial-prompt))))

(defun ai-code--explain-files-visible ()

"Explain all files visible in the current window."

(let ((files-context (ai-code--get-context-files-string)))

(if (string-empty-p files-context)

(user-error "No visible files with names found")

(let* ((initial-prompt (format "%s%s\n\nProvide an overview of these files, their relationships, and how they collectively contribute to the project's functionality."

ai-code-discussion--explain-files-prefix

files-context)))

(ai-code--confirm-and-send "Prompt: " initial-prompt)))))

(defun ai-code--explain-git-repo ()

"Explain the current git repository."

(let ((git-root (ai-code--git-root)))

(if (not git-root)

(user-error "Not in a git repository")

(let* ((repo-name (file-name-nondirectory (directory-file-name git-root)))

(initial-prompt (format "%s %s\nPath: %s\n\nProvide a comprehensive overview of this repository, its architecture, main technologies used, key modules, and how the different parts of the system interact."

ai-code-discussion--explain-git-repo-prefix

repo-name git-root)))

(ai-code--confirm-and-send "Prompt: " initial-prompt)))))

(defcustom ai-code-notes-file-name ".ai.code.notes.org"

"Default note file name relative to the project root.

:type 'string

:group 'ai-code)

(defconst ai-code-discussion--default-note-request

"Content of the most recent AI output"

"Default request text for `ai-code-take-notes'.")

(defun ai-code--get-note-candidates (default-note-file)

"Get a list of candidate note files.

(let* ((default-note-file-truename (file-truename default-note-file))

;; Get all org-mode buffers with associated files

(org-buffers (seq-filter

(lambda (buf)

(with-current-buffer buf

(and (derived-mode-p 'org-mode)

(buffer-file-name))))

(buffer-list)))

(org-buffer-files (mapcar #'buffer-file-name org-buffers))

;; Get org buffers visible in the current frame

(visible-org-buffers (seq-filter (lambda (buf) (get-buffer-window buf 'visible))

org-buffers))

(visible-org-files (mapcar #'buffer-file-name visible-org-buffers)))

(delete-dups

(mapcar #'file-truename

(append visible-org-files

(list default-note-file-truename)

org-buffer-files)))))

(defun ai-code--append-org-note (file title content)

"Append a note with TITLE and CONTENT to FILE."

(let ((note-dir (file-name-directory file)))

(unless (file-exists-p note-dir)

(make-directory note-dir t)))

(with-current-buffer (find-file-noselect file)

(save-excursion

(goto-char (point-max))

(unless (bobp)

(insert "\n\n"))

(insert "* " title "\n")

(org-insert-time-stamp (current-time) t nil)

(insert "\n\n")

(insert content)

(insert "\n"))

(save-buffer)))

(defun ai-code--build-note-insert-prompt (file-path line-number note-request)

"Build an AI prompt to insert a note into FILE-PATH.

(format "Insert the note into the current Org file.\n\

file-path

line-number

note-request))

(defun ai-code--target-directory-under-org-roam-p (target-dir)

"Return non-nil when TARGET-DIR is under `org-roam-directory'.

(and (ai-code--org-roam-ready-p)

(let ((target-expanded (expand-file-name target-dir))

(roam-expanded (expand-file-name org-roam-directory)))

(string-prefix-p (file-name-as-directory roam-expanded)

(file-name-as-directory target-expanded)))))

(defun ai-code--build-note-create-prompt (target-dir note-request)

"Build an AI prompt to create a note under TARGET-DIR.

(format "Create a new Org note file under directory: %s\n\

target-dir

note-request

(if (ai-code--target-directory-under-org-roam-p target-dir)

"After creating the note file, run org-roam-db-sync so it is discoverable by org-roam commands.\n\n"

"")))

(defun ai-code--org-roam-ready-p ()

"Return non-nil when org-roam is available and configured."

(and (or (featurep 'org-roam) (require 'org-roam nil t))

(boundp 'org-roam-directory)

(stringp org-roam-directory)

(not (string-empty-p org-roam-directory))))

(defun ai-code--select-note-target-directory (default-note-directory)

"Select note target directory using DEFAULT-NOTE-DIRECTORY as fallback."

(let ((fallback-dir (file-name-as-directory default-note-directory)))

(if (and (ai-code--org-roam-ready-p)

(y-or-n-p (format "Create note under org-roam-directory (%s)? "

org-roam-directory)))

(file-name-as-directory (expand-file-name org-roam-directory))

(file-name-as-directory

(read-directory-name "Directory for new note: "

fallback-dir

fallback-dir

t)))))

(defun ai-code--insert-org-note-at-point (title content)

"Insert a note with TITLE and CONTENT at point in current Org buffer."

(let ((level (or (org-current-level) 1)))

(unless (bolp)

(insert "\n"))

(insert (make-string level ?*) " " title "\n")

(org-insert-time-stamp (current-time) t nil)

(insert "\n\n" content "\n")))

(defun ai-code--sync-org-roam-note-if-needed (note-file)

"Sync NOTE-FILE into org-roam DB when NOTE-FILE is under `org-roam-directory'."

(when (and (ai-code--org-roam-ready-p)

(file-in-directory-p (file-truename note-file)

(file-truename (expand-file-name org-roam-directory))))

(condition-case err

(progn

(when (fboundp 'org-roam-db-update-file)

(org-roam-db-update-file note-file t))

(when (fboundp 'org-roam-db-sync)

(org-roam-db-sync)))

(error

(message "Failed to sync org-roam note: %s" (error-message-string err))))))

(defun ai-code--read-note-request ()

"Prompt user for the note request and return a non-empty string."

(let ((note-request (string-trim

(or (read-string "Specification for the note? "

ai-code-discussion--default-note-request

'ai-code-note-request-history)

""))))

(when (string-empty-p note-request)

(user-error "Note request cannot be empty"))

note-request))

(defun ai-code-take-notes (&optional arg)

"Take notes by AI request and send prompt to the AI session.

(interactive "P")

(let ((files-dir (ai-code--ensure-files-directory)))

(if arg

(let ((note-file (expand-file-name ai-code-notes-file-name files-dir)))

(find-file-other-window note-file))

(let* ((default-note-dir (file-name-as-directory files-dir))

(note-request (ai-code--read-note-request)))

(if (derived-mode-p 'org-mode)

(if (not buffer-file-name)

(user-error "Org buffer must be saved to a file before taking notes")

(let* ((target-file buffer-file-name)

(line-number (line-number-at-pos))

(default-prompt (ai-code--build-note-insert-prompt

target-file

line-number

note-request)))

(when (ai-code--confirm-and-send "Prompt: " default-prompt)

(message "Generated AI prompt for note insertion in %s" target-file))))

(let* ((target-dir (ai-code--select-note-target-directory default-note-dir))

(default-prompt (ai-code--build-note-create-prompt

target-dir

note-request)))

(when (ai-code--confirm-and-send "Prompt: " default-prompt)

(when (ai-code--target-directory-under-org-roam-p target-dir)

(when (require 'org-roam nil t)

(org-roam-db-sync)))

(message "Generated AI prompt for note creation under %s" target-dir))))))))

(provide 'ai-code-discussion)

(unless (bound-and-true-p ai-code--harness-loading)

(require 'ai-code-harness))