#!/usr/bin/env python3
"""Receive JPEG uploads from iPhone Shortcuts into local Mac inboxes."""

from __future__ import annotations

import argparse
import datetime as dt
import json
import os
import shlex
import subprocess
from dataclasses import dataclass
from http import HTTPStatus
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
from pathlib import Path
from tempfile import NamedTemporaryFile
from urllib.parse import parse_qs, urlparse


WORKSPACE_DIR = Path(__file__).resolve().parents[2]
DEFAULT_OPENCODE_DIR = WORKSPACE_DIR / "ai" / "inbox" / "photos"
DEFAULT_MATTERMOST_DIR = Path.home() / "Pictures" / "iPhone Inbox"

CLIPBOARD_NONE = "none"
CLIPBOARD_IMAGE = "image"
CLIPBOARD_PATH = "path"
CLIPBOARD_TERMINAL_PATH = "terminal-path"
CLIPBOARD_FILE = "file"


@dataclass(frozen=True)
class Profile:
    name: str
    output_dir: Path
    clipboard: str
    notify: bool = True
    reveal: bool = False


def env_flag(name: str, default: bool = False) -> bool:
    value = os.getenv(name)
    if value is None:
        return default
    return value.strip().lower() in {"1", "true", "yes", "on"}


def env_path(name: str, default: Path) -> Path:
    value = os.getenv(name)
    return Path(value).expanduser() if value else default


def profile_defaults() -> dict[str, Profile]:
    opencode_dir = env_path("IPHONE_PHOTO_OPENCODE_DIR", DEFAULT_OPENCODE_DIR)
    mattermost_dir = env_path("IPHONE_PHOTO_MATTERMOST_DIR", DEFAULT_MATTERMOST_DIR)
    general_dir = env_path("IPHONE_PHOTO_GENERAL_DIR", DEFAULT_MATTERMOST_DIR)
    return {
        "opencode": Profile("opencode", opencode_dir, CLIPBOARD_TERMINAL_PATH),
        "mattermost": Profile("mattermost", mattermost_dir, CLIPBOARD_IMAGE),
        "general": Profile("general", general_dir, CLIPBOARD_NONE),
    }


def timestamp() -> str:
    return dt.datetime.now().strftime("%Y%m%d-%H%M%S-%f")


def unique_path(output_dir: Path) -> Path:
    candidate = output_dir / f"iphone-{timestamp()}.jpg"
    counter = 1
    while candidate.exists():
        candidate = output_dir / f"iphone-{timestamp()}-{counter}.jpg"
        counter += 1
    return candidate


def looks_like_jpeg(data: bytes) -> bool:
    return data.startswith(b"\xff\xd8") and data.endswith(b"\xff\xd9")


def normalize_profile(value: str) -> str:
    return value.strip().lower() or "opencode"


def run_macos_action(command: list[str]) -> bool:
    try:
        result = subprocess.run(command, check=False, capture_output=True, text=True)
    except OSError as error:
        print(f"macOS action failed: {error}", flush=True)
        return False

    if result.returncode != 0:
        error = result.stderr.strip() or result.stdout.strip() or f"exit {result.returncode}"
        print(f"macOS action failed: {error}", flush=True)
        return False

    return True


def notify(title: str, message: str) -> bool:
    script = f"display notification {json.dumps(message)} with title {json.dumps(title)}"
    return run_macos_action(["osascript", "-e", script])


def reveal_in_finder(path: Path) -> bool:
    return run_macos_action(["open", "-R", str(path)])


def copy_image_to_clipboard(path: Path) -> bool:
    script = f"set the clipboard to (read (POSIX file {json.dumps(str(path))}) as JPEG picture)"
    return run_macos_action(["osascript", "-e", script])


def copy_file_to_clipboard(path: Path) -> bool:
    script = f"""
set theFile to POSIX file {json.dumps(str(path))} as alias
tell application "Finder"
    set the clipboard to {{theFile}}
end tell
"""
    return run_macos_action(["osascript", "-e", script])


def copy_text_to_clipboard(text: str) -> bool:
    script = f"set the clipboard to {json.dumps(text)}"
    return run_macos_action(["osascript", "-e", script])


def terminal_path_reference(path: Path) -> str:
    return shlex.quote(str(path))


def apply_clipboard_mode(mode: str, path: Path) -> bool:
    if mode == CLIPBOARD_NONE:
        return True
    if mode == CLIPBOARD_IMAGE:
        return copy_image_to_clipboard(path)
    if mode == CLIPBOARD_PATH:
        return copy_text_to_clipboard(str(path))
    if mode == CLIPBOARD_TERMINAL_PATH:
        return copy_text_to_clipboard(terminal_path_reference(path))
    if mode == CLIPBOARD_FILE:
        return copy_file_to_clipboard(path)
    print(f"unsupported clipboard mode: {mode}", flush=True)
    return False


class UploadHandler(BaseHTTPRequestHandler):
    server_version = "iPhonePhotoInbox/2.0"

    def do_GET(self) -> None:
        if self.path == "/health":
            self.send_text(HTTPStatus.OK, "ok\n")
            return
        self.send_text(HTTPStatus.NOT_FOUND, "not found\n")

    def do_POST(self) -> None:
        parsed = urlparse(self.path)
        if parsed.path != "/upload":
            self.send_text(HTTPStatus.NOT_FOUND, "not found\n")
            return

        query = parse_qs(parsed.query)
        expected_token = self.server.upload_token
        supplied_token = query.get("token", [""])[0]
        if expected_token and supplied_token != expected_token:
            self.send_text(HTTPStatus.UNAUTHORIZED, "bad token\n")
            return

        profile_name = normalize_profile(query.get("profile", [self.server.default_profile])[0])
        profile = self.server.profiles.get(profile_name)
        if profile is None:
            known = ", ".join(sorted(self.server.profiles))
            self.send_text(HTTPStatus.BAD_REQUEST, f"unknown profile: {profile_name}; expected one of {known}\n")
            return

        content_length = self.headers.get("Content-Length")
        if content_length is None:
            self.send_text(HTTPStatus.LENGTH_REQUIRED, "missing content length\n")
            return

        try:
            size = int(content_length)
        except ValueError:
            self.send_text(HTTPStatus.BAD_REQUEST, "invalid content length\n")
            return

        if size <= 0 or size > self.server.max_bytes:
            self.send_text(HTTPStatus.REQUEST_ENTITY_TOO_LARGE, "invalid upload size\n")
            return

        data = self.rfile.read(size)
        if not looks_like_jpeg(data):
            self.send_text(HTTPStatus.UNSUPPORTED_MEDIA_TYPE, "expected jpeg\n")
            return

        output_dir = self.server.output_dir_override or profile.output_dir
        output_dir.mkdir(parents=True, exist_ok=True)
        target = unique_path(output_dir)
        with NamedTemporaryFile(dir=output_dir, delete=False) as tmp:
            tmp.write(data)
            temp_path = Path(tmp.name)
        temp_path.replace(target)

        if profile.notify:
            if notify("iPhone Photo Inbox", f"{profile.name}: {target.name}"):
                print("notification sent", flush=True)
        if profile.reveal:
            if reveal_in_finder(target):
                print("revealed in Finder", flush=True)
        if apply_clipboard_mode(profile.clipboard, target):
            print(f"clipboard mode applied: {profile.clipboard}", flush=True)

        self.send_text(HTTPStatus.CREATED, f"{target}\n")
        print(f"saved {target} profile={profile.name}", flush=True)

    def log_message(self, format: str, *args: object) -> None:
        print(f"{self.address_string()} - {format % args}", flush=True)

    def send_text(self, status: HTTPStatus, body: str) -> None:
        encoded = body.encode("utf-8")
        self.send_response(status)
        self.send_header("Content-Type", "text/plain; charset=utf-8")
        self.send_header("Content-Length", str(len(encoded)))
        self.end_headers()
        self.wfile.write(encoded)


class UploadServer(ThreadingHTTPServer):
    def __init__(
        self,
        server_address: tuple[str, int],
        handler_class: type[BaseHTTPRequestHandler],
        profiles: dict[str, Profile],
        default_profile: str,
        output_dir_override: Path | None,
        upload_token: str,
        max_bytes: int,
    ) -> None:
        super().__init__(server_address, handler_class)
        self.profiles = profiles
        self.default_profile = default_profile
        self.output_dir_override = output_dir_override
        self.upload_token = upload_token
        self.max_bytes = max_bytes


def apply_legacy_clipboard_overrides(profile: Profile) -> Profile:
    clipboard = profile.clipboard
    if env_flag("IPHONE_PHOTO_COPY"):
        clipboard = CLIPBOARD_IMAGE
    if env_flag("IPHONE_PHOTO_COPY_FILE"):
        clipboard = CLIPBOARD_FILE
    if env_flag("IPHONE_PHOTO_COPY_PATH"):
        clipboard = CLIPBOARD_PATH
    if env_flag("IPHONE_PHOTO_COPY_TERMINAL_PATH"):
        clipboard = CLIPBOARD_TERMINAL_PATH

    notify_enabled = env_flag("IPHONE_PHOTO_NOTIFY", profile.notify)
    reveal_enabled = env_flag("IPHONE_PHOTO_REVEAL", profile.reveal)
    return Profile(profile.name, profile.output_dir, clipboard, notify_enabled, reveal_enabled)


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--host", default=os.getenv("IPHONE_PHOTO_HOST", "0.0.0.0"))
    parser.add_argument("--port", type=int, default=int(os.getenv("IPHONE_PHOTO_PORT", "8787")))
    parser.add_argument("--profile", default=os.getenv("IPHONE_PHOTO_PROFILE", "opencode"))
    parser.add_argument("--output-dir", type=Path, default=os.getenv("IPHONE_PHOTO_OUTPUT_DIR"))
    parser.add_argument("--token", default=os.getenv("IPHONE_PHOTO_TOKEN", ""))
    parser.add_argument("--max-mb", type=int, default=int(os.getenv("IPHONE_PHOTO_MAX_MB", "30")))
    parser.add_argument(
        "--clipboard",
        choices=[CLIPBOARD_NONE, CLIPBOARD_IMAGE, CLIPBOARD_PATH, CLIPBOARD_TERMINAL_PATH, CLIPBOARD_FILE],
        default=os.getenv("IPHONE_PHOTO_CLIPBOARD"),
    )
    parser.add_argument("--no-notify", action="store_true", default=env_flag("IPHONE_PHOTO_NO_NOTIFY"))
    parser.add_argument("--reveal", action="store_true", default=env_flag("IPHONE_PHOTO_REVEAL"))
    return parser.parse_args()


def build_profiles(args: argparse.Namespace) -> dict[str, Profile]:
    profiles = {
        name: apply_legacy_clipboard_overrides(profile)
        for name, profile in profile_defaults().items()
    }

    if args.clipboard:
        profiles = {
            name: Profile(profile.name, profile.output_dir, args.clipboard, profile.notify, profile.reveal)
            for name, profile in profiles.items()
        }
    if args.no_notify:
        profiles = {
            name: Profile(profile.name, profile.output_dir, profile.clipboard, False, profile.reveal)
            for name, profile in profiles.items()
        }
    if args.reveal:
        profiles = {
            name: Profile(profile.name, profile.output_dir, profile.clipboard, profile.notify, True)
            for name, profile in profiles.items()
        }
    return profiles


def main() -> None:
    args = parse_args()
    profiles = build_profiles(args)
    default_profile = normalize_profile(args.profile)
    if default_profile not in profiles:
        known = ", ".join(sorted(profiles))
        raise SystemExit(f"unknown default profile: {default_profile}; expected one of {known}")

    output_dir_override = Path(args.output_dir).expanduser().resolve() if args.output_dir else None
    server = UploadServer(
        (args.host, args.port),
        UploadHandler,
        profiles,
        default_profile,
        output_dir_override,
        args.token,
        args.max_mb * 1024 * 1024,
    )
    print(f"listening on http://{args.host}:{args.port}/upload", flush=True)
    print(f"default profile: {default_profile}", flush=True)
    for profile in profiles.values():
        output_dir = output_dir_override or profile.output_dir
        print(
            f"profile {profile.name}: dir={output_dir.expanduser().resolve()} "
            f"clipboard={profile.clipboard} notify={profile.notify} reveal={profile.reveal}",
            flush=True,
        )
    if not args.token:
        print("warning: no token configured; anyone on this network can upload", flush=True)
    server.serve_forever()


if __name__ == "__main__":
    main()