"""Declarative workspace contributions; no plugin JavaScript or model execution."""

from typing import Literal

from pydantic import BaseModel, ConfigDict, Field, model_validator


class WorkspaceModel(BaseModel):
    model_config = ConfigDict(extra="forbid")


class PanelWidth(WorkspaceModel):
    preferred: int = Field(default=340, ge=200, le=1000)
    minimum: int = Field(default=240, ge=160, le=800)
    maximum: int = Field(default=480, ge=200, le=1200)

    @model_validator(mode="after")
    def ordered(self):
        if not self.minimum <= self.preferred <= self.maximum:
            raise ValueError("面板宽度必须满足 minimum ≤ preferred ≤ maximum")
        return self


class WorkspaceField(WorkspaceModel):
    id: str = Field(pattern=r"^[a-z][a-z0-9_]{0,47}$")
    label: str = Field(min_length=1, max_length=100)
    description: str = Field(default="", max_length=1000)
    kind: Literal["choice", "text"]
    options: list[str] = Field(default_factory=list, max_length=12)
    max_length: int = Field(default=2000, ge=1, le=10000)
    report: bool = True

    @model_validator(mode="after")
    def valid_options(self):
        if self.kind == "choice" and not self.options:
            raise ValueError("选择字段必须声明 options")
        if self.kind == "text" and self.options:
            raise ValueError("文本字段不接受 options")
        if len(set(self.options)) != len(self.options) or any(
            not option.strip() or len(option) > min(100, self.max_length) for option in self.options
        ):
            raise ValueError("选项必须非空、唯一且不超过长度限制")
        return self


class WorkspacePanel(WorkspaceModel):
    id: str = Field(pattern=r"^[a-z][a-z0-9_]{0,47}$")
    title: str = Field(min_length=1, max_length=100)
    side: Literal["left", "right"]
    kind: Literal["initial_prompt", "original_case", "form"]
    width: PanelWidth = Field(default_factory=PanelWidth)


class WorkspaceContribution(WorkspaceModel):
    panels: list[WorkspacePanel] = Field(min_length=1, max_length=2)
    fields: list[WorkspaceField] = Field(default_factory=list, max_length=20)

    @model_validator(mode="after")
    def unique_contributions(self):
        if len({panel.id for panel in self.panels}) != len(self.panels) or len(
            {panel.kind for panel in self.panels}
        ) != len(self.panels):
            raise ValueError("面板 id 和 kind 不得重复")
        if len({field.id for field in self.fields}) != len(self.fields):
            raise ValueError("工作区字段 id 不得重复")
        if bool(self.fields) != any(panel.kind == "form" for panel in self.panels):
            raise ValueError("表单面板与 fields 必须同时声明")
        return self