"""
Dialog for creating / editing server groups.
"""

import customtkinter as ctk
from typing import Optional

from core.i18n import t

GROUP_COLORS = [
    "#ef4444",  # red
    "#f97316",  # orange
    "#f59e0b",  # amber
    "#22c55e",  # green
    "#3b82f6",  # blue
    "#6366f1",  # indigo
    "#a855f7",  # purple
    "#ec4899",  # pink
]


class GroupDialog(ctk.CTkToplevel):
    """Small dialog: group name + color picker (8 circles)."""

    def __init__(self, master, store, group: Optional[dict] = None):
        super().__init__(master)
        self.store = store
        self._group = group  # None = add, dict = edit
        self.result: Optional[dict] = None

        self.title(t("edit_group") if group else t("add_group"))
        self.geometry("340x200")
        self.resizable(False, False)
        self.transient(master)
        self.focus_force()
        self.protocol("WM_DELETE_WINDOW", self._on_close)

        self._master_ref = master
        self._map_bind_id = master.bind("<Map>", self._on_parent_map, add="+")

        # ── Name ──
        ctk.CTkLabel(self, text=t("group_name"), anchor="w").pack(
            fill="x", padx=20, pady=(15, 2))
        self._name_var = ctk.StringVar(value=group["name"] if group else "")
        self._name_entry = ctk.CTkEntry(self, textvariable=self._name_var)
        self._name_entry.pack(fill="x", padx=20)
        self._name_entry.focus()

        # ── Color picker ──
        ctk.CTkLabel(self, text=t("group_color"), anchor="w").pack(
            fill="x", padx=20, pady=(10, 2))

        color_frame = ctk.CTkFrame(self, fg_color="transparent")
        color_frame.pack(fill="x", padx=20)

        self._selected_color = group["color"] if group else GROUP_COLORS[0]
        self._color_buttons: list[ctk.CTkButton] = []

        for color in GROUP_COLORS:
            btn = ctk.CTkButton(
                color_frame, text="", width=28, height=28,
                fg_color=color, hover_color=color,
                border_width=3,
                border_color=color,
                corner_radius=14,
                command=lambda c=color: self._pick_color(c),
            )
            btn.pack(side="left", padx=2)
            self._color_buttons.append(btn)

        self._highlight_selected_color()

        # ── Buttons ──
        btn_frame = ctk.CTkFrame(self, fg_color="transparent")
        btn_frame.pack(fill="x", padx=20, pady=(15, 10))

        ctk.CTkButton(btn_frame, text=t("cancel"), width=80,
                       fg_color="gray", command=self._on_close).pack(side="left")
        ctk.CTkButton(btn_frame, text=t("save"), width=80,
                       command=self._save).pack(side="right")

        # Enter to save
        self.bind("<Return>", lambda e: self._save())

    def _pick_color(self, color: str):
        self._selected_color = color
        self._highlight_selected_color()

    def _highlight_selected_color(self):
        for btn in self._color_buttons:
            fg = btn.cget("fg_color")
            if fg == self._selected_color:
                btn.configure(border_color="white")
            else:
                btn.configure(border_color=fg)

    def _on_parent_map(self, event=None):
        try:
            if not self.winfo_exists():
                return
            self.deiconify()
            self.lift()
            self.focus_force()
        except Exception:
            pass

    def _on_close(self):
        try:
            self._master_ref.unbind("<Map>", self._map_bind_id)
        except Exception:
            pass
        self.destroy()

    def _save(self):
        name = self._name_var.get().strip()
        if not name:
            self._name_entry.focus()
            return

        if self._group:
            # Edit mode
            self.store.update_group(
                self._group["id"], name=name, color=self._selected_color)
            self.result = {"id": self._group["id"], "name": name,
                           "color": self._selected_color}
        else:
            # Add mode
            group = self.store.add_group(name, self._selected_color)
            self.result = group

        self._on_close()