from datetime import datetime
from typing import Optional, Any
from uuid import UUID
from pydantic import BaseModel, Field


# ── Parameter schema types ──────────────────────────────────────────────────

class ScriptParameterValidation(BaseModel):
    pattern: Optional[str] = None
    min_length: Optional[int] = None
    max_length: Optional[int] = None
    min_value: Optional[float] = None
    max_value: Optional[float] = None

class ScriptParameter(BaseModel):
    key: str
    label: str
    type: str  # text | password | select | boolean | multi_text | number | textarea
    required: bool = True
    placeholder: Optional[str] = None
    group: Optional[str] = None
    order: int = 0
    help_text: Optional[str] = None
    options: Optional[list[dict]] = None  # for select type: [{value, label}]
    default: Optional[Any] = None
    validation: Optional[ScriptParameterValidation] = None
    sensitive: bool = False  # password fields → redacted in generation record

class ScriptParametersSchema(BaseModel):
    parameters: list[ScriptParameter]


# ── Category ────────────────────────────────────────────────────────────────

class ScriptCategoryResponse(BaseModel):
    id: UUID
    name: str
    slug: str
    description: Optional[str] = None
    icon: Optional[str] = None
    sort_order: int
    template_count: int = 0

    class Config:
        from_attributes = True


# ── Template ────────────────────────────────────────────────────────────────

class ScriptTemplateCreate(BaseModel):
    category_id: UUID
    name: str = Field(..., min_length=1, max_length=200)
    description: Optional[str] = None
    use_case: Optional[str] = None
    script_body: str = Field(..., min_length=1)
    parameters_schema: dict = Field(default_factory=dict)
    default_values: dict = Field(default_factory=dict)
    validation_rules: dict = Field(default_factory=dict)
    tags: list[str] = Field(default_factory=list)
    complexity: str = Field(default="beginner", pattern="^(beginner|intermediate|advanced)$")
    estimated_runtime: Optional[str] = None
    requires_elevation: bool = False
    requires_modules: list[str] = Field(default_factory=list)
    language: str | None = None

class ScriptTemplateUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=200)
    description: Optional[str] = None
    use_case: Optional[str] = None
    script_body: Optional[str] = None
    parameters_schema: Optional[dict] = None
    default_values: Optional[dict] = None
    validation_rules: Optional[dict] = None
    tags: Optional[list[str]] = None
    complexity: Optional[str] = Field(None, pattern="^(beginner|intermediate|advanced)$")
    estimated_runtime: Optional[str] = None
    requires_elevation: Optional[bool] = None
    requires_modules: Optional[list[str]] = None
    is_active: Optional[bool] = None

class ScriptTemplateListItem(BaseModel):
    id: UUID
    category_id: UUID
    team_id: Optional[UUID] = None
    created_by: Optional[UUID] = None
    name: str
    slug: str
    description: Optional[str] = None
    tags: list[str]
    complexity: str
    estimated_runtime: Optional[str] = None
    requires_elevation: bool
    requires_modules: list[str]
    is_verified: bool
    usage_count: int
    language: str | None = None

    class Config:
        from_attributes = True

class ScriptTemplateDetail(ScriptTemplateListItem):
    use_case: Optional[str] = None
    script_body: str
    parameters_schema: dict
    default_values: dict
    validation_rules: dict
    version: int
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


# ── Generation ───────────────────────────────────────────────────────────────

class ScriptGenerateRequest(BaseModel):
    template_id: UUID
    parameters: dict[str, Any]
    session_id: Optional[UUID] = None  # Legacy tree-based session
    ai_session_id: Optional[UUID] = None  # FlowPilot AI session

class ScriptGenerateResponse(BaseModel):
    id: UUID
    script: str
    warnings: list[str] = Field(default_factory=list)
    metadata: dict

    class Config:
        from_attributes = True

class ScriptGenerationRecord(BaseModel):
    id: UUID
    template_id: UUID
    template_name: str
    parameters_used: dict  # passwords already redacted
    created_at: datetime

    class Config:
        from_attributes = True