"""Direct Apple Notes automation for the mutable Reyna CLI.

The scripts are static JXA programs. User data is passed only as one JSON
argument to ``osascript`` so note content is never interpolated into source.
This deliberately stays outside the stable Swift host: Python-only CLI changes
do not require rebuilding or re-signing Reyna CLI.app.
"""

from __future__ import annotations

import json
import subprocess
from typing import Any, Callable, Optional, Sequence


class NotesAutomationError(RuntimeError):
    """Apple Notes could not complete the requested automation operation."""


Runner = Callable[..., Any]


_NOTES_LIST_SCRIPT = r'''function run(argv) {
  const input = JSON.parse(argv[0]);
  const app = Application("/System/Applications/Notes.app");
  const query = (input.query || "").toLowerCase();
  const folderName = input.folder || "";
  const found = [];
  const accounts = app.accounts();
  for (let a = 0; a < accounts.length && found.length < input.limit; a++) {
    const folders = accounts[a].folders();
    for (let f = 0; f < folders.length && found.length < input.limit; f++) {
      const folder = folders[f];
      const currentFolder = String(folder.name());
      if (folderName && currentFolder !== folderName) continue;
      const notes = folder.notes();
      for (let n = 0; n < notes.length && found.length < input.limit; n++) {
        const note = notes[n];
        let title = "";
        let text = "";
        try { title = String(note.name()); } catch (_) {}
        try { text = String(note.plaintext()); } catch (_) {}
        if (query && (title + "\n" + text).toLowerCase().indexOf(query) === -1) continue;
        found.push({
          id: String(note.id()),
          title: title,
          folder: currentFolder,
          modifiedAt: note.modificationDate().toISOString(),
          preview: input.includePreview ? text.slice(0, 180) : undefined
        });
      }
    }
  }
  return JSON.stringify(found);
}'''

_NOTES_READ_SCRIPT = r'''function run(argv) {
  const input = JSON.parse(argv[0]);
  const app = Application("/System/Applications/Notes.app");
  const accounts = app.accounts();
  for (let a = 0; a < accounts.length; a++) {
    const folders = accounts[a].folders();
    for (let f = 0; f < folders.length; f++) {
      const notes = folders[f].notes();
      for (let n = 0; n < notes.length; n++) {
        const note = notes[n];
        if (String(note.id()) === input.id) {
          return JSON.stringify({
            id: String(note.id()),
            title: String(note.name()),
            folder: String(folders[f].name()),
            bodyHtml: String(note.body()),
            plaintext: String(note.plaintext()),
            createdAt: note.creationDate().toISOString(),
            modifiedAt: note.modificationDate().toISOString()
          });
        }
      }
    }
  }
  throw new Error("Note not found");
}'''

_NOTES_CREATE_SCRIPT = r'''function run(argv) {
  const input = JSON.parse(argv[0]);
  const app = Application("/System/Applications/Notes.app");
  const escapeHtml = value => String(value).replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;");
  const body = escapeHtml(input.body).replace(/\n/g, "<br>");
  const html = "<h1>" + escapeHtml(input.title) + "</h1><div>" + body + "</div>";
  let destination = null;
  const accounts = app.accounts();
  for (let a = 0; a < accounts.length && !destination; a++) {
    const folders = accounts[a].folders();
    for (let f = 0; f < folders.length; f++) {
      if (!input.folder || String(folders[f].name()) === input.folder) {
        destination = folders[f];
        break;
      }
    }
  }
  if (!destination) throw new Error("Notes destination folder not found");
  const note = app.Note({body: html});
  destination.notes.push(note);
  return JSON.stringify({id: String(note.id()), title: String(note.name()), folder: String(destination.name())});
}'''


def _run_jxa(script: str, payload: dict[str, Any], *, runner: Runner = subprocess.run) -> Any:
    arguments: Sequence[str] = [
        "/usr/bin/osascript",
        "-l",
        "JavaScript",
        "-e",
        script,
        "--",
        json.dumps(payload, separators=(",", ":")),
    ]
    try:
        result = runner(arguments, capture_output=True, text=True, timeout=30, check=False)
    except (OSError, subprocess.TimeoutExpired) as exc:
        raise NotesAutomationError(f"Apple Notes automation could not start: {exc}") from exc
    if result.returncode:
        detail = (result.stderr or result.stdout or "Apple Notes automation failed").strip()
        raise NotesAutomationError(detail[:1000])
    try:
        return json.loads((result.stdout or "").strip())
    except json.JSONDecodeError as exc:
        raise NotesAutomationError("Apple Notes automation returned invalid JSON") from exc


def _bounded_text(value: str, field: str, maximum: int) -> str:
    value = value.strip()
    if not value:
        raise ValueError(f"{field} is required")
    if len(value) > maximum:
        raise ValueError(f"{field} exceeds maximum length {maximum}")
    return value


def list_notes(
    *,
    query: Optional[str] = None,
    folder: Optional[str] = None,
    include_preview: bool = False,
    limit: int = 20,
    runner: Runner = subprocess.run,
) -> list[dict[str, Any]]:
    if not 1 <= limit <= 100:
        raise ValueError("limit must be between 1 and 100")
    result = _run_jxa(
        _NOTES_LIST_SCRIPT,
        {"query": query or "", "folder": folder or "", "includePreview": include_preview, "limit": limit},
        runner=runner,
    )
    if not isinstance(result, list):
        raise NotesAutomationError("Apple Notes list response was not a list")
    return result


def read_note(note_id: str, *, runner: Runner = subprocess.run) -> dict[str, Any]:
    result = _run_jxa(_NOTES_READ_SCRIPT, {"id": _bounded_text(note_id, "note id", 1024)}, runner=runner)
    if not isinstance(result, dict):
        raise NotesAutomationError("Apple Notes read response was not an object")
    return result


def create_note(
    title: str,
    body: str = "",
    *,
    folder: Optional[str] = None,
    runner: Runner = subprocess.run,
) -> dict[str, Any]:
    title = _bounded_text(title, "title", 500)
    if len(body) > 100_000:
        raise ValueError("body exceeds maximum length 100000")
    result = _run_jxa(_NOTES_CREATE_SCRIPT, {"title": title, "body": body, "folder": folder or ""}, runner=runner)
    if not isinstance(result, dict):
        raise NotesAutomationError("Apple Notes create response was not an object")
    return result