from __future__ import annotations

from html import escape


DEFAULT_STATUS_LABELS = {
    "open": "исполняет роль",
    "backstage": "в закулисье",
    "delay": "задержки",
    "rest": "антракт",
}


def _get_block(config: dict, html_key: str, plain_key: str) -> str:
    html_value = config.get(html_key, "").strip()
    if html_value:
        return html_value

    plain_value = config.get(plain_key, "").strip()
    if plain_value:
        return escape(plain_value)

    return ""


def build_channel_text(config: dict, state: dict) -> str:
    parts: list[str] = []

    for html_key, plain_key in (
        ("header_html", "header"),
        ("intro_links_html", "intro_links"),
        ("projects_block_html", "projects_block"),
        ("actors_title_html", "actors_title"),
    ):
        block = _get_block(config, html_key, plain_key)
        if block:
            parts.append(block)

    actor_lines: list[str] = []
    actor_state = state.get("actors", {})
    status_labels = {**DEFAULT_STATUS_LABELS, **config.get("status_labels", {})}
    for actor in config["actors"]:
        current = actor_state.get(actor["key"], {})
        status = current.get("status", actor.get("default_status", "backstage"))
        phrase = current.get("phrase", actor.get("phrases", {}).get(status, ""))
        label = status_labels.get(status, status)

        emoji = actor.get("emoji_html") or escape(actor.get("emoji", ""))
        name_html = actor.get("display_html") or escape(actor["display_name"])
        meta_html = actor.get("meta_html")
        if not meta_html:
            meta_html = f" {escape(actor['pronouns'])} "

        line = (
            f'{emoji} <a href="{escape(actor["link"], quote=True)}"><b>{name_html}</b></a>'
            f"{meta_html}{escape(label)}."
        )
        if phrase:
            line = f"{line}\n   {escape(phrase)}"
        actor_lines.append(line)

    actor_lines.extend(config.get("static_actor_lines_html", []))
    parts.append("\n".join(actor_lines))

    for html_key, plain_key in (
        ("legend_html", "legend"),
        ("footer_html", "footer"),
    ):
        block = _get_block(config, html_key, plain_key)
        if block:
            parts.append(block)

    return "\n\n".join(part for part in parts if part)