"""Commands page — read-only browser of `commands.yaml` + plugin packs."""

import os
import flet as ft
import yaml


_HERE = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


def _load_commands() -> dict[str, dict]:
    try:
        with open(os.path.join(_HERE, "commands.yaml"), "rt", encoding="utf8") as f:
            return yaml.safe_load(f) or {}
    except (OSError, yaml.YAMLError):
        return {}


def build(page: ft.Page) -> ft.Control:  # pylint: disable=unused-argument
    cmds = _load_commands()
    search = ft.TextField(label="Фильтр", value="", autofocus=False, expand=True)
    list_view = ft.ListView(expand=True, spacing=6, padding=0)

    def render(query: str = ""):
        q = (query or "").strip().lower()
        list_view.controls.clear()
        shown = 0
        for cmd_id, entry in sorted(cmds.items()):
            phrases = entry.get("phrases") or []
            action = entry.get("action") or {}
            joined = " ".join(phrases).lower()
            if q and q not in cmd_id.lower() and q not in joined:
                continue
            shown += 1
            list_view.controls.append(
                ft.Container(
                    content=ft.Column([
                        ft.Row([
                            ft.Text(cmd_id, weight=ft.FontWeight.W_600, size=13),
                            ft.Container(
                                content=ft.Text(action.get("type", "?"), size=10),
                                bgcolor="#1e3a44",
                                padding=ft.padding.symmetric(horizontal=8, vertical=2),
                                border_radius=10,
                            ),
                        ], alignment=ft.MainAxisAlignment.SPACE_BETWEEN),
                        ft.Text(
                            " · ".join(phrases[:6]) + ("…" if len(phrases) > 6 else ""),
                            size=11,
                            color="#8aa0a8",
                        ),
                    ], spacing=4),
                    bgcolor="#15252b",
                    border_radius=8,
                    padding=10,
                )
            )
        # The header refers to the closure-captured `header` Text via the
        # outer-scope binding declared after this function.
        header.value = f"Команд показано: {shown} из {len(cmds)}"
        page.update()

    search.on_change = lambda e: render(e.control.value)

    header = ft.Text(f"Всего команд: {len(cmds)}", size=12, color="#8aa0a8")

    render()

    return ft.Column(
        controls=[
            ft.Row([
                ft.Text("Команды", size=24, weight=ft.FontWeight.W_700),
                header,
            ], alignment=ft.MainAxisAlignment.SPACE_BETWEEN),
            search,
            ft.Container(content=list_view, expand=True),
        ],
        spacing=10,
        expand=True,
    )