"""
Build helpers for the Prole installer (root-level package).

UI-agnostic command composition for the Prole macOS app build.
"""
from __future__ import annotations

from pathlib import Path
import tkinter as tk
from tkinter import ttk, scrolledtext

from . import main as inst_main
from . import screen as ui

def get_build_command(project_root: Path, env: str | None) -> str:
    """Return the Prole app build command with an env comment suffix.

    Example output:
    cd "/path/to/repo" && ./prole-app/build.sh build # Dev
    """
    env_label = (env or "Dev").strip().title()
    prole_root = str(project_root)
    return f"cd \"{prole_root}\" && ./prole-app/build.sh build # {env_label}"


# ---------------- Screen (UI) helpers ----------------
def create_build_page(app):
    """Create the Build page UI and register it via installer.main."""
    f = ttk.Frame(app.page_area)
    f.place(x=0, y=0, relwidth=1, relheight=1)

    ttk.Label(f, text='Build', style='Title.TLabel').pack(anchor='w', padx=24, pady=(24, 6))
    ttk.Label(f, text='Choose a target and build the artifacts.', style='Body.TLabel').pack(anchor='w', padx=24)

    wrap = ttk.Frame(f)
    wrap.pack(anchor='w', padx=24, pady=12)
    ttk.Label(wrap, text='Target Environment:', style='Body.TLabel').pack(side='left')
    app.deploy_env_var = tk.StringVar(value='Dev')
    ttk.Combobox(wrap, textvariable=app.deploy_env_var, values=['Dev', 'Service', 'Prod'], state='readonly', width=18).pack(side='left', padx=10)

    # Build output console
    app.build_output = scrolledtext.ScrolledText(f, height=12, bg='#fafafa', fg='#1d1d1f')
    app.build_output.pack(fill='both', expand=True, padx=24, pady=12)

    inst_main.register_page(app, 'build', f)
    return f