#!/usr/bin/env python3
"""
spr init — CLI room scaffolding wizard

Interactive terminal wizard that walks through layers 0-6,
generating cfg/<room>/ for a new soleprint room.

Usage:
    python -m init.cli myroom                  # Interactive wizard
    python -m init.cli myroom --from sample    # Clone existing room as variant
"""

import argparse
import logging
import sys

from init.core import (
    CFG_DIR,
    BACKEND_FRAMEWORKS,
    FRONTEND_FRAMEWORKS,
    clone_room,
    generate_layer0,
    generate_layer1,
    generate_layer2,
    generate_layer3,
    generate_layer4,
    generate_layer5,
    generate_layer6,
    next_free_port,
)

log = logging.getLogger("init")


# ---------------------------------------------------------------------------
# Terminal prompts
# ---------------------------------------------------------------------------

def ask(prompt: str, default: str = "") -> str:
    try:
        if default:
            val = input(f"{prompt} [{default}]: ").strip()
            return val or default
        return input(f"{prompt}: ").strip()
    except EOFError:
        return default or ""


def ask_yn(prompt: str, default: bool = True) -> bool:
    suffix = "[Y/n]" if default else "[y/N]"
    try:
        val = input(f"{prompt} {suffix}: ").strip().lower()
    except EOFError:
        return default
    if not val:
        return default
    return val in ("y", "yes")


def ask_choice(prompt: str, choices: list[str], default: str = "") -> str:
    choices_str = "/".join(choices)
    try:
        if default:
            val = input(f"{prompt} [{choices_str}] ({default}): ").strip().lower()
            return val if val in choices else default
        while True:
            val = input(f"{prompt} [{choices_str}]: ").strip().lower()
            if val in choices:
                return val
            log.warning("  Choose one of: %s", choices_str)
    except EOFError:
        return default or choices[0]


# ---------------------------------------------------------------------------
# Wizard
# ---------------------------------------------------------------------------

def wizard(room: str):
    room_dir = CFG_DIR / room

    if room_dir.exists():
        log.error("'%s' already exists in cfg/", room)
        sys.exit(1)

    port = next_free_port()

    log.info("\n=== Soleprint Room Setup: %s ===", room)
    log.info("  Target: cfg/%s/", room)

    room_type = ask_choice("Room type?", ["standalone", "managed"], "standalone")
    port = int(ask("Hub port", str(port)))
    is_managed = room_type == "managed"

    # Layer 0: always
    config = generate_layer0(room_dir, room, port, is_managed)

    # Layer 1: docker
    if ask_yn("\nContinue to Layer 1 (Docker)?"):
        generate_layer1(room_dir, room, port)
    else:
        log.info("Done! Build with: python build.py --cfg %s", room)
        return

    app_info = None

    # Layer 2: managed app
    if is_managed:
        if ask_yn("\nContinue to Layer 2 (Managed App)?"):
            app_name = ask("App name", room)
            backend_path = ask("Backend repo path")
            backend_framework = ask_choice("Backend framework?", BACKEND_FRAMEWORKS, "django")
            frontend_path = ask("Frontend repo path [skip]")
            has_frontend = bool(frontend_path) and frontend_path.lower() != "skip"

            frontend_framework = None
            if has_frontend:
                frontend_framework = ask_choice("Frontend framework?", FRONTEND_FRAMEWORKS, "nextjs")

            app_info = generate_layer2(
                room_dir, room, config,
                app_name, backend_path, backend_framework,
                frontend_path if has_frontend else None,
                frontend_framework,
            )
        else:
            log.info("Done! Build with: python build.py --cfg %s", room)
            return

        # Layer 3: link
        if ask_yn("\nContinue to Layer 3 (Link - DB Bridge)?", default=False):
            generate_layer3(room_dir, room, app_info["backend_framework"])

    # Layer 4: scripts
    app_name = app_info["app_name"] if app_info else None
    if ask_yn("\nContinue to Layer 4 (Scripts)?"):
        generate_layer4(room_dir, room, app_name)

    # Layer 5: tester
    if ask_yn("\nContinue to Layer 5 (Test Suite)?", default=False):
        url = ask("Test target URL", "http://localhost:8000")
        generate_layer5(room_dir, room, url)

    # Layer 6: nginx (only if managed with frontend)
    if is_managed and app_info and app_info["has_frontend"]:
        if ask_yn("\nContinue to Layer 6 (Nginx Sidebar Injection)?", default=False):
            generate_layer6(room_dir, room, app_info["app_name"])

    log.info("Ready! Build with: python build.py --cfg %s", room)


def main():
    logging.basicConfig(level=logging.INFO, format="%(message)s")

    parser = argparse.ArgumentParser(
        description="Soleprint room scaffolding wizard",
        usage="python -m init.cli <room> [--from <source>]",
    )
    parser.add_argument("room", help="Name of the new room")
    parser.add_argument("--from", dest="from_room", help="Clone from existing room")

    args = parser.parse_args()

    if args.from_room:
        clone_room(args.from_room, args.room)
    else:
        wizard(args.room)


if __name__ == "__main__":
    main()