"""Data models for the Proxmox Cluster Network Changer."""

from dataclasses import dataclass, field
from typing import Optional


@dataclass
class NetworkInterface:
    """Represents a network interface configuration."""
    name: str  # e.g. vmbr0
    address: str  # e.g. 192.168.0.101
    netmask: str  # e.g. 255.255.255.0
    cidr: int  # e.g. 24
    gateway: Optional[str] = None
    bridge_ports: Optional[str] = None
    raw_config: str = ""


@dataclass
class NodeInfo:
    """Represents a single Proxmox node."""
    name: str  # e.g. pve1
    current_ip: str  # current corosync/management IP
    new_ip: Optional[str] = None  # planned new management IP
    ssh_host: Optional[str] = None  # how to reach it (IP or hostname)
    is_local: bool = False  # is this the node we're running on
    is_reachable: bool = False
    interfaces: list[NetworkInterface] = field(default_factory=list)
    hosts_content: str = ""
    network_interfaces_content: str = ""
    # Extra IP mappings for this node (e.g. ceph public/cluster on separate NICs)
    # {old_ip: new_ip}
    extra_ip_mapping: dict[str, str] = field(default_factory=dict)


@dataclass
class CorosyncNode:
    """A node entry in corosync.conf."""
    nodeid: int
    name: str
    ring0_addr: str
    ring1_addr: Optional[str] = None


@dataclass
class CorosyncConfig:
    """Parsed corosync configuration."""
    nodes: list[CorosyncNode] = field(default_factory=list)
    config_version: int = 1
    cluster_name: str = ""
    transport: str = "knet"
    raw_content: str = ""


@dataclass
class CephConfig:
    """Parsed Ceph configuration."""
    fsid: str = ""
    public_network: str = ""  # e.g. 192.168.0.0/24
    cluster_network: str = ""  # e.g. 192.168.0.0/24
    mon_hosts: list[str] = field(default_factory=list)
    mon_sections: dict[str, dict[str, str]] = field(default_factory=dict)
    raw_content: str = ""


@dataclass
class MigrationPlan:
    """Complete migration plan with old -> new mappings."""
    nodes: list[NodeInfo] = field(default_factory=list)
    old_network: str = ""  # e.g. 192.168.0.0/24
    new_network: str = ""  # e.g. 172.0.2.0/16
    new_gateway: Optional[str] = None
    ceph_new_public_network: str = ""
    ceph_new_cluster_network: str = ""
    corosync_config: Optional[CorosyncConfig] = None
    ceph_config: Optional[CephConfig] = None
    dry_run: bool = False
    quorum_available: bool = True
    # Detected bridges: {bridge_name: subnet}
    detected_bridges: dict[str, str] = field(default_factory=dict)