"""构建海报预览、Prompt 与导出共同使用的 renderDocument v2。"""
from copy import deepcopy

from insurance.poster.content_builder import build_poster_content


DEFAULT_SECTIONS = (
    "hero",
    "summary",
    "benefits",
    "features",
    "cta",
    "disclaimer",
)


def build_render_document(
    *,
    format_spec: dict,
    template: dict | None,
    copy_content: dict,
    case_facts: dict,
    product_rules: dict,
    plan_type: str,
    compliance_revision: str,
    custom_height: int | None = None,
    sections: list[dict] | None = None,
    brand: dict | None = None,
) -> dict:
    """按固定优先级组装唯一渲染文档。"""
    template = template or {}
    facts = deepcopy(case_facts or product_rules.get("facts") or {})
    rules = deepcopy(product_rules or {})
    if not rules.get("features") and facts.get("key_benefits"):
        rules["features"] = [
            {"title": item, "summary": ""} if isinstance(item, str) else item
            for item in facts["key_benefits"]
        ]

    content = build_poster_content(
        parsed_data=facts,
        product_rules=rules,
        output_mode=format_spec["outputMode"],
        plan_type=plan_type or "other",
    )
    theme = _build_theme(template.get("colorScheme") or {})
    normalized_sections = _normalize_sections(sections, format_spec["outputMode"], content)

    requested_output = deepcopy(format_spec["output"])
    export_size = format_spec["exportSize"]
    if custom_height is not None:
        requested_output["height"] = custom_height
        export_size = f"{requested_output['width']}x{custom_height}"

    return {
        "schemaVersion": 2,
        "revision": 1,
        "formatId": format_spec["id"],
        "outputMode": format_spec["outputMode"],
        "layoutKey": template.get("layoutKey") or (
            "long_complete" if format_spec["outputMode"] == "long" else "single_hero_data"
        ),
        "templateId": template.get("id"),
        "layout": deepcopy(format_spec["layout"]),
        "requestedOutput": requested_output,
        "exportSize": export_size,
        "copy": deepcopy(copy_content or {}),
        "facts": facts,
        "summary": content["summary"],
        "features": content["features"],
        "benefits": content["benefit_table"],
        "theme": theme,
        "style": theme,
        "sections": normalized_sections,
        "background": {},
        "brand": deepcopy(brand or {}),
        "fieldProfile": content["field_profile"],
        "warnings": content["warnings"],
        "complianceRevision": compliance_revision or "",
    }


def _build_theme(color_scheme: dict) -> dict:
    return {
        "primary": color_scheme.get("primary") or "#173f35",
        "accent": color_scheme.get("accent") or "#c99a4b",
        "surface": color_scheme.get("surface") or "#f7f4ed",
        "text": color_scheme.get("text") or "#17231f",
        "muted": color_scheme.get("muted") or "#64716d",
    }


def _normalize_sections(sections: list[dict] | None, output_mode: str, content: dict) -> list[dict]:
    current = {
        item.get("id"): item.get("visible", True)
        for item in (sections or [])
        if isinstance(item, dict) and item.get("id") in DEFAULT_SECTIONS
    }
    result = []
    for section_id in DEFAULT_SECTIONS:
        visible = current.get(section_id, True)
        if section_id == "benefits":
            visible = visible and output_mode == "long" and len(content["benefit_table"]) >= 3
        elif section_id == "features":
            visible = visible and bool(content["features"])
        elif section_id == "summary":
            visible = visible and any(content["summary"].values())
        result.append({"id": section_id, "visible": visible})
    return result