"""Nexus — Pydantic Request/Response Models
Shared schemas for API validation, replacing raw `dict` parameters.
"""

from typing import Optional, List
from pydantic import BaseModel, Field


# ── Setting ──

class SettingUpdatePayload(BaseModel):
    value: str = Field(..., min_length=0)


# ── Agent ──

class AgentHeartbeat(BaseModel):
    server_id: int
    is_online: bool = True
    system_info: Optional[dict] = None
    agent_version: Optional[str] = None


class AgentExec(BaseModel):
    command: str = Field(..., min_length=1)
    timeout: int = Field(30, ge=1, le=300)
    sudo: bool = False


# ── Server ──

class ServerCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    domain: str = Field(..., min_length=1, max_length=255)
    port: int = Field(22, ge=1, le=65535)
    username: str = Field("root", max_length=100)
    auth_method: str = Field("key", pattern="^(key|password)$")
    password: Optional[str] = None
    ssh_key_path: Optional[str] = None
    ssh_key_private: Optional[str] = None
    ssh_key_public: Optional[str] = None
    agent_port: int = Field(8601, ge=1, le=65535)
    agent_api_key: Optional[str] = None
    description: Optional[str] = None
    target_path: Optional[str] = None
    category: Optional[str] = None
    platform_id: Optional[int] = None
    node_id: Optional[int] = None
    protocols: Optional[list] = None
    extra_attrs: Optional[dict] = None


class ServerUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    domain: Optional[str] = Field(None, min_length=1, max_length=255)
    port: Optional[int] = Field(None, ge=1, le=65535)
    username: Optional[str] = None
    auth_method: Optional[str] = Field(None, pattern="^(key|password)$")
    password: Optional[str] = None
    ssh_key_path: Optional[str] = None
    ssh_key_private: Optional[str] = None
    ssh_key_public: Optional[str] = None
    agent_port: Optional[int] = Field(None, ge=1, le=65535)
    agent_api_key: Optional[str] = None
    description: Optional[str] = None
    target_path: Optional[str] = None
    category: Optional[str] = None
    platform_id: Optional[int] = None
    node_id: Optional[int] = None
    protocols: Optional[list] = None
    extra_attrs: Optional[dict] = None
    connectivity: Optional[str] = None


class ServerPush(BaseModel):
    server_ids: List[int] = Field(..., min_length=1)
    source_path: str = Field(..., min_length=1)
    sync_mode: str = Field("incremental", pattern="^(incremental|full|overwrite|checksum)$")
    batch_size: int = Field(50, ge=1, le=200)
    concurrency: int = Field(10, ge=1, le=50)


class ServerCheck(BaseModel):
    server_ids: List[int] = Field(..., min_length=1)


# ── Sync ──

class SyncFiles(BaseModel):
    server_ids: List[int] = Field(..., min_length=1)
    source_path: str = Field(..., min_length=1)
    target_path: Optional[str] = None
    sync_mode: str = Field("incremental", pattern="^(incremental|full|overwrite|checksum)$")
    batch_size: int = Field(50, ge=1, le=200)
    concurrency: int = Field(10, ge=1, le=50)


class SyncCommands(BaseModel):
    server_ids: List[int] = Field(..., min_length=1)
    commands: List[str] = Field(..., min_length=1)
    timeout: int = Field(60, ge=1, le=600)
    concurrency: int = Field(10, ge=1, le=50)


class SyncConfig(BaseModel):
    server_ids: List[int] = Field(..., min_length=1)
    config: dict = Field(..., min_length=1)
    concurrency: int = Field(10, ge=1, le=50)


class SyncSftp(BaseModel):
    server_id: int
    operation: str = Field("put", pattern="^(put|get)$")
    local_path: str = Field(..., min_length=1)
    remote_path: str = Field(..., min_length=1)


class SyncBrowse(BaseModel):
    server_id: int
    path: str = Field("/", min_length=1)


# ── Script ──

class ScriptCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    category: str = Field("ops", pattern="^(ops|deploy|check|cleanup)$")
    content: str = Field(..., min_length=1)
    description: Optional[str] = None
    created_by: Optional[str] = None


class ScriptUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    category: Optional[str] = Field(None, pattern="^(ops|deploy|check|cleanup)$")
    content: Optional[str] = None
    description: Optional[str] = None


class ScriptExecute(BaseModel):
    script_id: Optional[int] = None
    command: str = Field(..., min_length=1)
    server_ids: List[int] = Field(..., min_length=1)
    timeout: int = Field(60, ge=1, le=600)


# ── DB Credential ──

class DbCredentialCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    db_type: str = Field("mysql", pattern="^(mysql|postgresql|mariadb|mongodb|redis)$")
    host: str = Field(..., min_length=1)
    port: int = Field(3306, ge=1, le=65535)
    username: str = Field(..., min_length=1)
    password: str = Field(..., min_length=1)
    database: Optional[str] = None


# ── Schedule ──

class ScheduleCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    source_path: str = Field(..., min_length=1)
    server_ids: str = Field(..., min_length=3)  # JSON array string
    cron_expr: str = Field(..., min_length=9, max_length=100)
    enabled: bool = True


class ScheduleUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    source_path: Optional[str] = None
    server_ids: Optional[str] = None
    cron_expr: Optional[str] = None
    enabled: Optional[bool] = None


# ── Preset ──

class PresetCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    encrypted_pw: str = Field(..., min_length=1)


# ── Platform / Node ──

class PlatformCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    category: str = Field(..., min_length=1, max_length=50)
    type: str = Field(..., min_length=1, max_length=50)
    default_protocols: Optional[list] = None
    charset: str = "utf-8"


class PlatformUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    category: Optional[str] = None
    type: Optional[str] = None
    default_protocols: Optional[list] = None
    charset: Optional[str] = None


class NodeCreate(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    parent_id: Optional[int] = None
    sort_order: int = 0


class NodeUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    parent_id: Optional[int] = None
    sort_order: Optional[int] = None


# ── Pagination ──

class PaginatedResponse(BaseModel):
    items: list
    total: int
    page: int
    per_page: int
    pages: int