Add Linkki broadcast image

linkki-tiedotus/linkki_poster/models.py

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+from dataclasses import dataclass
+from enum import Enum
+from pathlib import Path
+from typing import Literal
+
+
+class Language(str, Enum):
+    FI = "fi"
+    SV = "sv"
+    EN = "en"
+
+
+LANGUAGE_DISPLAY_NAMES: dict[Language, str] = {
+    Language.FI: "Finnish",
+    Language.SV: "Swedish",
+    Language.EN: "English",
+}
+
+
+@dataclass(frozen=True)
+class Config:
+    bot_token: str
+    chat_id: str
+    channel_username: str
+    discussion_group_id: str = ""
+
+
+@dataclass(frozen=True)
+class LanguageAssets:
+    language: Language
+    text_file: Path
+    text_raw: str
+    images: list[Path]
+
+
+@dataclass(frozen=True)
+class ScanResult:
+    global_images: list[Path]
+    languages: list[LanguageAssets]
+
+
+@dataclass(frozen=True)
+class PlaceholderToken:
+    label: str
+    target_lang: Language
+    source_span: tuple[int, int]
+
+
+@dataclass
+class PostedMessageRef:
+    language: Language
+    text_message_id: int | None
+    caption_message_id: int | None
+    message_url: str
+    had_placeholders: bool
+    text_mode: Literal["message", "caption", "none"]
+
+
+@dataclass(frozen=True)
+class TextSegmentBinding:
+    message_id: int
+    mode: Literal["message", "caption"]
+
+
+@dataclass(frozen=True)
+class LanguageBinding:
+    language: Language
+    image_message_ids: list[int]
+    text_segments: list[TextSegmentBinding]
+    primary_message_id: int | None
+    primary_message_url: str
+    discussion_message_id: int | None = None
+
+
+@dataclass(frozen=True)
+class PublishBinding:
+    global_message_ids: list[int]
+    global_attached_to_language: Language | None
+    languages: dict[Language, LanguageBinding]
+    discussion_message_ids: dict[int, int]
+    global_primary_message_id: int | None = None
+    global_discussion_message_id: int | None = None