server-manager/gui/server_dialog.py

"""
Server add/edit dialog — modal window with all server fields.
"""

import customtkinter as ctk
from core.server_store import SERVER_TYPES, DEFAULT_PORTS
from core.i18n import t


def _get_network_interfaces() -> list[tuple[str, str]]:
    """Return list of (name, ipv4_address) for available network interfaces."""
    try:
        import psutil
        result = []
        for name, addrs in psutil.net_if_addrs().items():
            for addr in addrs:
                if addr.family.name == "AF_INET" and addr.address != "127.0.0.1":
                    result.append((name, addr.address))
        return result
    except Exception:
        return []


class ServerDialog(ctk.CTkToplevel):
    def __init__(self, master, store, server: dict | None = None):
        super().__init__(master)
        self.store = store
        self.editing = server
        self._original_alias = server["alias"] if server else None
        self.result = None

        self.title(t("edit_server") if server else t("add_server"))
        self.geometry("450x680")
        self.resizable(False, False)
        self.grab_set()

        # Center on parent
        self.transient(master)

        self._build_ui(server)

    def _build_ui(self, server: dict | None):
        pad = {"padx": 20, "pady": (5, 0)}
        entry_pad = {"padx": 20, "pady": (2, 5)}

        # Alias
        ctk.CTkLabel(self, text=t("alias"), anchor="w").pack(fill="x", **pad)
        self.alias_entry = ctk.CTkEntry(self, placeholder_text=t("placeholder_alias"))
        self.alias_entry.pack(fill="x", **entry_pad)
        # Enable undo functionality
        self.alias_entry._entry.config(undo=True)

        # IP
        ctk.CTkLabel(self, text=t("ip"), anchor="w").pack(fill="x", **pad)
        self.ip_entry = ctk.CTkEntry(self, placeholder_text=t("placeholder_ip"))
        self.ip_entry.pack(fill="x", **entry_pad)
        # Enable undo functionality
        self.ip_entry._entry.config(undo=True)

        # Type + Port row
        row = ctk.CTkFrame(self, fg_color="transparent")
        row.pack(fill="x", padx=20, pady=(5, 5))

        type_frame = ctk.CTkFrame(row, fg_color="transparent")
        type_frame.pack(side="left", fill="x", expand=True, padx=(0, 5))
        ctk.CTkLabel(type_frame, text=t("type"), anchor="w").pack(fill="x")
        self.type_var = ctk.StringVar(value="ssh")
        self.type_menu = ctk.CTkOptionMenu(
            type_frame, values=SERVER_TYPES, variable=self.type_var,
            command=self._on_type_change
        )
        self.type_menu.pack(fill="x")

        port_frame = ctk.CTkFrame(row, fg_color="transparent")
        port_frame.pack(side="left", fill="x", expand=True, padx=(5, 0))
        ctk.CTkLabel(port_frame, text=t("port"), anchor="w").pack(fill="x")
        self.port_entry = ctk.CTkEntry(port_frame, placeholder_text=t("placeholder_port"))
        self.port_entry.pack(fill="x")
        # Enable undo functionality
        self.port_entry._entry.config(undo=True)

        # Network interface
        ctk.CTkLabel(self, text=t("network_interface"), anchor="w").pack(fill="x", **pad)
        self._iface_map: dict[str, str] = {}  # display_name -> ip
        ifaces = _get_network_interfaces()
        auto_label = t("auto_default")
        iface_values = [auto_label]
        for name, ip in ifaces:
            label = f"{name} ({ip})"
            iface_values.append(label)
            self._iface_map[label] = ip
        self._iface_var = ctk.StringVar(value=auto_label)
        self._iface_menu = ctk.CTkOptionMenu(self, values=iface_values, variable=self._iface_var)
        self._iface_menu.pack(fill="x", **entry_pad)

        # User
        ctk.CTkLabel(self, text=t("username"), anchor="w").pack(fill="x", **pad)
        self.user_entry = ctk.CTkEntry(self, placeholder_text=t("placeholder_user"))
        self.user_entry.pack(fill="x", **entry_pad)
        # Enable undo functionality
        self.user_entry._entry.config(undo=True)

        # Password
        ctk.CTkLabel(self, text=t("password"), anchor="w").pack(fill="x", **pad)
        pass_frame = ctk.CTkFrame(self, fg_color="transparent")
        pass_frame.pack(fill="x", padx=20, pady=(2, 5))
        self.password_entry = ctk.CTkEntry(pass_frame, show="*", placeholder_text=t("placeholder_password"))
        self.password_entry.pack(side="left", fill="x", expand=True, padx=(0, 5))
        # Enable undo functionality
        self.password_entry._entry.config(undo=True)
        self.show_pass = ctk.CTkButton(pass_frame, text=t("show"), width=60, command=self._toggle_password)
        self.show_pass.pack(side="right")
        self._pass_visible = False

        # TOTP Secret
        ctk.CTkLabel(self, text=t("totp_secret_dialog"), anchor="w").pack(fill="x", **pad)
        self.totp_entry = ctk.CTkEntry(self, placeholder_text=t("placeholder_totp_secret"),
                                        font=ctk.CTkFont(family="Consolas", size=12))
        self.totp_entry.pack(fill="x", **entry_pad)
        # Enable undo functionality
        self.totp_entry._entry.config(undo=True)

        # Skip status checks
        self.skip_check_var = ctk.BooleanVar(value=False)
        self.skip_check_cb = ctk.CTkCheckBox(
            self, text=t("skip_check"), variable=self.skip_check_var
        )
        self.skip_check_cb.pack(fill="x", padx=20, pady=(8, 2))

        # Notes
        ctk.CTkLabel(self, text=t("notes"), anchor="w").pack(fill="x", **pad)
        self.notes_entry = ctk.CTkEntry(self, placeholder_text=t("placeholder_notes"))
        self.notes_entry.pack(fill="x", **entry_pad)
        # Enable undo functionality
        self.notes_entry._entry.config(undo=True)

        # Buttons
        btn_frame = ctk.CTkFrame(self, fg_color="transparent")
        btn_frame.pack(fill="x", padx=20, pady=(15, 20))
        ctk.CTkButton(btn_frame, text=t("cancel"), fg_color="#6b7280", command=self.destroy).pack(side="left", expand=True, padx=(0, 5))
        ctk.CTkButton(btn_frame, text=t("save"), command=self._save).pack(side="right", expand=True, padx=(5, 0))

        # Fill values if editing
        if server:
            self.alias_entry.insert(0, server.get("alias", ""))
            self.ip_entry.insert(0, server.get("ip", ""))
            self.type_var.set(server.get("type", "ssh"))
            self.port_entry.insert(0, str(server.get("port", 22)))
            self.user_entry.insert(0, server.get("user", ""))
            self.password_entry.insert(0, server.get("password", ""))
            self.totp_entry.insert(0, server.get("totp_secret", ""))
            self.skip_check_var.set(server.get("skip_check", False))
            self.notes_entry.insert(0, server.get("notes", ""))

            # Restore network interface selection
            saved_ip = server.get("bind_interface")
            if saved_ip:
                found = False
                for label, ip in self._iface_map.items():
                    if ip == saved_ip:
                        self._iface_var.set(label)
                        found = True
                        break
                if not found:
                    unavail_label = f"? ({saved_ip})"
                    self._iface_map[unavail_label] = saved_ip
                    current_values = self._iface_menu.cget("values")
                    current_values.append(unavail_label)
                    self._iface_menu.configure(values=current_values)
                    self._iface_var.set(unavail_label)

    def _on_type_change(self, value):
        default_port = DEFAULT_PORTS.get(value, 22)
        self.port_entry.delete(0, "end")
        self.port_entry.insert(0, str(default_port))

    def _toggle_password(self):
        self._pass_visible = not self._pass_visible
        self.password_entry.configure(show="" if self._pass_visible else "*")
        self.show_pass.configure(text=t("hide") if self._pass_visible else t("show"))

    def _save(self):
        alias = self.alias_entry.get().strip()
        ip = self.ip_entry.get().strip()
        port_str = self.port_entry.get().strip()
        user = self.user_entry.get().strip()
        password = self.password_entry.get()
        server_type = self.type_var.get()
        totp_secret = self.totp_entry.get().strip()
        notes = self.notes_entry.get().strip()

        # Validation
        if not alias:
            self._show_error(t("alias_required"))
            return
        if not ip:
            self._show_error(t("ip_required"))
            return
        try:
            port = int(port_str) if port_str else DEFAULT_PORTS.get(server_type, 22)
        except ValueError:
            self._show_error(t("port_must_be_number"))
            return
        if port < 1 or port > 65535:
            self._show_error(t("port_out_of_range"))
            return

        server_data = {
            "alias": alias,
            "ip": ip,
            "port": port,
            "user": user or "root",
            "password": password,
            "type": server_type,
            "notes": notes,
        }
        if totp_secret:
            server_data["totp_secret"] = totp_secret
        if self.skip_check_var.get():
            server_data["skip_check"] = True

        # Network interface binding
        iface_selection = self._iface_var.get()
        bind_ip = self._iface_map.get(iface_selection)
        if bind_ip:
            server_data["bind_interface"] = bind_ip

        try:
            if self.editing:
                # Check for alias conflict if alias was changed
                if alias != self._original_alias and self.store.get_server(alias):
                    self._show_error(t("alias_exists").format(alias=alias))
                    return
                self.store.update_server(self._original_alias, server_data)
            else:
                self.store.add_server(server_data)
            self.result = server_data
            self.destroy()
        except ValueError as e:
            self._show_error(str(e))

    def _show_error(self, message: str):
        # Simple error via title flash
        self.title(t("error_prefix").format(msg=message))
        self.after(2000, lambda: self.title(t("edit_server") if self.editing else t("add_server")))