389 lines
16 KiB
Python
389 lines
16 KiB
Python
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"""The library screen: the web library (docs/library.md) in a terminal — "Weiterlesen" card,
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status and folder chips, search, sort, Bücher/Zeitschriften. The rules are in library.py.
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Keys: 1–4 status (Alle/Angefangen/Ungelesen/Gelesen), o folder, / search, s sort, m Bücher or
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Zeitschriften, c continue the book read last, Enter open. The chips and the card also answer
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the mouse.
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"""
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from __future__ import annotations
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from pathlib import Path
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from rich.text import Text
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from textual import work
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from textual.binding import Binding
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from textual.screen import ModalScreen, Screen
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from textual.markup import escape
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from textual.widgets import Footer, Header, Input, Label, ListItem, ListView, OptionList, Static
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from . import blocks, config as config_mod, epub, library, library_meta, progress, remote
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from .reader_screen import ReaderScreen
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from .statusbar import StatusBar
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PAGES_NOTE_EVERY = 4 # seconds between redraws while lengths are worked out
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class ChoiceScreen(ModalScreen[int]):
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"""Pick one of a few options; dismisses with its index, or None on Escape."""
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BINDINGS = [Binding("escape,q", "cancel", "Abbrechen")]
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def __init__(self, title: str, options: list[str], current: int = 0) -> None:
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super().__init__()
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self._title = title
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self._options = options
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self._current = current
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def compose(self):
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yield Label(self._title, id="choice-title")
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yield OptionList(*[Text(o) for o in self._options], id="choice-list")
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def on_mount(self) -> None:
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ol = self.query_one(OptionList)
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ol.highlighted = max(0, min(self._current, len(self._options) - 1))
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ol.focus()
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def on_option_list_option_selected(self, event: OptionList.OptionSelected) -> None:
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self.dismiss(event.option_index)
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def action_cancel(self) -> None:
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self.dismiss(None)
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class LibraryScreen(Screen):
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BINDINGS = [
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Binding("enter", "open_selected", "Öffnen"),
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Binding("c", "continue_reading", "Weiterlesen"),
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Binding("/", "search", "Suchen"),
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Binding("s", "pick_sort", "Sortierung"),
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Binding("o", "pick_folder", "Ordner"),
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Binding("m", "toggle_section", "Bücher/Zeitschriften"),
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Binding("1", "set_status('all')", "Alle", show=False),
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Binding("2", "set_status('started')", "Angefangen", show=False),
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Binding("3", "set_status('unread')", "Ungelesen", show=False),
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Binding("4", "set_status('read')", "Gelesen", show=False),
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Binding("escape", "reset", "Zurücksetzen", show=False),
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Binding("q", "quit", "Beenden"),
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]
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def __init__(self, library_dir: Path) -> None:
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super().__init__()
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self.library_dir = library_dir
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self.rows: list[library.Row] = [] # every book
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self.section_rows: list[library.Row] = [] # of the section shown (Bücher or Zeitschriften)
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self.shown: list[library.Row] = [] # the list on screen
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self.going: library.Row | None = None # the card's book
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self.folder_names: list[str] = []
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self.q = ""
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self.status = "all"
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self.folder: str | None = None # None: all, '': without folder, else a name
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self.sort = library_meta.get_extra("sort", "recent")
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if self.sort not in dict(library.SORTS):
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self.sort = "recent"
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self.magazines = False
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self._lengths_running = False
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self._lengths_tried: set[str] = set()
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self._lengths_note = ""
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# ---- layout
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def compose(self):
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yield Header()
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yield Static("", id="lib-chips")
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yield Input(placeholder="Titel, Autor …", id="lib-search")
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yield Static("", id="lib-card")
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yield Static("", id="lib-note")
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yield ListView(id="library-list")
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yield StatusBar()
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yield Footer()
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def on_mount(self) -> None:
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self.query_one("#lib-search").display = False
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self.sub_title = str(self.library_dir)
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self._refresh_list()
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cfg = config_mod.load()
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if cfg is not None:
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self._auto_sync(cfg)
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def on_screen_resume(self) -> None:
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self._refresh_list() # a book was read: the order and the percentages changed
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# ---- sync
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@work(thread=True)
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def _auto_sync(self, cfg: config_mod.RemoteConfig) -> None:
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try:
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result = remote.sync_library(self.library_dir, cfg)
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except remote.SyncError as e:
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self.app.call_from_thread(self.notify, str(e), severity="warning", timeout=5)
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return # best-effort — e.g. offline; the local library still works
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self.app.call_from_thread(self._on_auto_sync_done, result)
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def _on_auto_sync_done(self, result: remote.SyncResult) -> None:
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self._refresh_list()
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if result.new_titles:
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self.notify(f"{len(result.new_titles)} neue(s) Buch/Bücher auf dem Server.", timeout=3)
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# ---- the list
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def _gather(self) -> list[library.Row]:
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store = progress.default()
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remote_books = library_meta.remote_entries()
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files = epub.scan_library(self.library_dir)
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keys = {epub._book_id(p) for p in files} | set(remote_books)
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states = {k: st for k in keys if (st := store.get(k)) is not None}
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return library.build_rows(files, remote_books, states, library_meta.local_pages(), epub._book_id)
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def _refresh_list(self) -> None:
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self.rows = self._gather()
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self.section_rows = library.section(self.rows, self.magazines)
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order = library_meta.get_extra("folder_order", [])
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self.folder_names = [n for n, _ in library.folder_list(self.section_rows, order)]
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if self.folder not in (None, "") and self.folder not in self.folder_names:
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self.folder = None
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self._draw()
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self._fill_lengths()
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def _draw(self) -> None:
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self._draw_chips()
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list_view = self.query_one("#library-list", ListView)
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selected = self.shown[list_view.index].key if self.shown and list_view.index is not None and list_view.index < len(self.shown) else None
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shown = library.shown(self.section_rows, q=self.q, status=self.status, folder=self.folder, sort=self.sort)
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# The card: only on the plain list, and its book is not repeated below (once, on top).
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plain = self.status == "all" and self.folder is None and not self.q
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self.going, recent = library.continue_rows(self.section_rows) if plain else (None, [])
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self._draw_card(recent)
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if self.going is not None and self.going in shown:
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shown.remove(self.going)
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self.shown = shown
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list_view.clear()
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if not self.rows:
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list_view.append(ListItem(Label(f"Keine EPUBs gefunden in {self.library_dir}")))
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elif not self.section_rows:
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list_view.append(ListItem(Label("Noch keine Zeitschriften — m wechselt zu den Büchern." if self.magazines
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else "Alle Bücher stehen bei den Zeitschriften — m wechselt dorthin.")))
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elif not self.shown and self.going is None:
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list_view.append(ListItem(Label("Nichts gefunden.")))
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by_length = self.sort in ("short", "long")
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for r in self.shown:
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list_view.append(ListItem(Label(Text(self._label(r, by_length)))))
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if self.shown:
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idx = next((i for i, r in enumerate(self.shown) if r.key == selected), 0)
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list_view.index = idx
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if not self.query_one("#lib-search", Input).display: # not while a search is open
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list_view.focus()
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self._draw_note()
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@staticmethod
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def _label(r: library.Row, by_length: bool) -> str:
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mark = "✓ " if r.is_read else ""
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cloud = "☁ " if r.path is None else ""
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author = f" — {r.author}" if r.author else ""
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pct = f" {library.percent(r)} %" if (r.fraction > 0 and not r.is_read) else ""
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length = f" · {r.pages} S." if by_length and r.pages else ""
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return f"{mark}{cloud}{r.title}{author}{pct}{length}"
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def _draw_chips(self) -> None:
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counts = library.status_counts(self.section_rows)
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parts = []
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for i, (sid, label) in enumerate(library.STATUSES):
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text = label if sid == "all" else f"{label} {counts[sid]}"
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parts.append(self._chip(f"{i + 1} {text}", f"screen.set_status('{sid}')", self.status == sid))
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folders = library.folder_list(self.section_rows, library_meta.get_extra("folder_order", []))
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if folders:
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parts.append("[dim]│[/]")
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parts.append(self._chip("Alle Ordner", "screen.set_folder('all')", self.folder is None))
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for i, (name, count) in enumerate(folders):
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parts.append(self._chip(f"{name} {count}", f"screen.set_folder('{i}')", self.folder == name))
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none = sum(1 for r in self.section_rows if not r.folders)
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if none:
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parts.append(self._chip(f"Ohne Ordner {none}", "screen.set_folder('none')", self.folder == ""))
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section = "Zeitschriften" if self.magazines else "Bücher"
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sort = dict(library.SORTS)[self.sort]
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head = f"[b]{section}[/] [dim]Sortierung:[/] {escape(sort)} "
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self.query_one("#lib-chips", Static).update(head + " ".join(parts))
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@staticmethod
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def _chip(label: str, action: str, on: bool) -> str:
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label = escape(label)
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return f"[@click={action}]" + (f"[b reverse] {label} [/]" if on else f" [underline]{label}[/] ") + "[/]"
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def _draw_card(self, recent: list[library.Row]) -> None:
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card = self.query_one("#lib-card", Static)
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b = self.going
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if b is None:
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card.display = False
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return
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card.display = True
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ago = library.ago(b.read_at)
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pct = library.percent(b)
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bar = "█" * (pct // 5) + "░" * (20 - pct // 5)
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pages = f" · Seite {max(1, int(b.pages * b.fraction + 0.5))} von {b.pages}" if b.pages else ""
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where = f" · zuletzt auf {escape(b.device)}" if b.device and b.device != progress.DEVICE_NAME else ""
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lines = [
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f"[@click=screen.continue_reading][dim]Weiterlesen{' · ' + ago if ago else ''}{where}[/]",
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f"[b]{escape(b.title)}[/]",
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escape(b.author) if b.author else "",
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f"{bar} {pct} %{pages} [dim](c)[/][/]",
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]
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if recent:
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lines.append("[dim]Zuletzt gelesen:[/] " + " · ".join(
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f"{escape(r.title)}{' ✓' if r.is_read else ''}" for r in recent))
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card.update("\n".join(l for l in lines if l))
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def _draw_note(self) -> None:
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note = self.query_one("#lib-note", Static)
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text = self._lengths_note
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if not text and self.sort in ("short", "long"):
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unknown = sum(1 for r in self.section_rows if not r.pages)
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if unknown:
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text = f"{unknown} Bücher ohne bekannte Länge (noch nicht geladen) stehen am Ende."
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note.update(escape(text))
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note.display = bool(text)
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# ---- lengths (the web works them out once a length sort is chosen: the file is needed)
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def _fill_lengths(self) -> None:
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if self._lengths_running or self.sort not in ("short", "long"):
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return
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todo = [r for r in self.rows if not r.pages and r.path is not None and r.key not in self._lengths_tried]
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if not todo:
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return
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self._lengths_running = True
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self._work_lengths([(r.key, r.path) for r in todo])
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@work(thread=True, exclusive=True, group="lengths")
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def _work_lengths(self, todo: list[tuple[str, Path]]) -> None:
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import time
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shown_at = time.monotonic()
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try:
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for done, (key, path) in enumerate(todo, 1):
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self._lengths_tried.add(key)
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try:
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pages = blocks.book_pages(path)
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except Exception:
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pages = 0 # stays at the end
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if pages:
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library_meta.set_local_pages(key, pages)
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self._lengths_note = f"Länge wird ermittelt … {done} von {len(todo)} Büchern"
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if time.monotonic() - shown_at > PAGES_NOTE_EVERY:
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shown_at = time.monotonic()
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self.app.call_from_thread(self._refresh_list_keep_note)
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finally:
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self._lengths_note = ""
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self._lengths_running = False
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self.app.call_from_thread(self._refresh_list)
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def _refresh_list_keep_note(self) -> None:
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self.rows = self._gather()
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self.section_rows = library.section(self.rows, self.magazines)
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self._draw()
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# ---- actions
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def action_set_status(self, status: str) -> None:
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self.status = "all" if self.status == status else status
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self._draw()
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def action_set_folder(self, which: str) -> None:
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"""`which`: 'all', 'none' (without a folder) or the index of a folder chip."""
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if which == "all":
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self.folder = None
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elif which == "none":
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self.folder = ""
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elif which.isdigit() and int(which) < len(self.folder_names):
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name = self.folder_names[int(which)]
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self.folder = None if self.folder == name else name
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self._draw()
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def action_pick_folder(self) -> None:
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values: list[str | None] = [None] + self.folder_names + ([""] if any(not r.folders for r in self.section_rows) else [])
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if len(values) == 1:
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self.notify("Keine Ordner angelegt.", timeout=2)
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return
|
|||
|
|
names = ["Alle Ordner" if v is None else "Ohne Ordner" if v == "" else v for v in values]
|
|||
|
|
|
|||
|
|
def picked(i: int | None) -> None:
|
|||
|
|
if i is not None:
|
|||
|
|
self.folder = values[i]
|
|||
|
|
self._draw()
|
|||
|
|
|
|||
|
|
self.app.push_screen(ChoiceScreen("Ordner", names, values.index(self.folder)), picked)
|
|||
|
|
|
|||
|
|
def action_pick_sort(self) -> None:
|
|||
|
|
ids = [s for s, _ in library.SORTS]
|
|||
|
|
|
|||
|
|
def picked(i: int | None) -> None:
|
|||
|
|
if i is None:
|
|||
|
|
return
|
|||
|
|
self.sort = ids[i]
|
|||
|
|
library_meta.set_extra("sort", self.sort)
|
|||
|
|
self._draw()
|
|||
|
|
self._fill_lengths()
|
|||
|
|
|
|||
|
|
self.app.push_screen(ChoiceScreen("Sortieren nach", [n for _, n in library.SORTS], ids.index(self.sort)), picked)
|
|||
|
|
|
|||
|
|
def action_toggle_section(self) -> None:
|
|||
|
|
self.magazines = not self.magazines
|
|||
|
|
self.folder = None
|
|||
|
|
self._refresh_list()
|
|||
|
|
|
|||
|
|
def action_search(self) -> None:
|
|||
|
|
box = self.query_one("#lib-search", Input)
|
|||
|
|
box.display = True
|
|||
|
|
box.focus()
|
|||
|
|
|
|||
|
|
def on_input_changed(self, event: Input.Changed) -> None:
|
|||
|
|
self.q = event.value
|
|||
|
|
self._draw()
|
|||
|
|
|
|||
|
|
def on_input_submitted(self, event: Input.Submitted) -> None:
|
|||
|
|
self.query_one("#library-list", ListView).focus()
|
|||
|
|
|
|||
|
|
def action_reset(self) -> None:
|
|||
|
|
box = self.query_one("#lib-search", Input)
|
|||
|
|
if box.display or self.q or self.status != "all" or self.folder is not None:
|
|||
|
|
box.value = ""
|
|||
|
|
box.display = False
|
|||
|
|
self.q, self.status, self.folder = "", "all", None
|
|||
|
|
self._draw()
|
|||
|
|
|
|||
|
|
def action_continue_reading(self) -> None:
|
|||
|
|
if self.going is not None:
|
|||
|
|
self._open(self.going)
|
|||
|
|
else:
|
|||
|
|
self.notify("Nichts zum Weiterlesen — ein Buch öffnen.", timeout=3)
|
|||
|
|
|
|||
|
|
def action_open_selected(self) -> None:
|
|||
|
|
list_view = self.query_one("#library-list", ListView)
|
|||
|
|
if not self.shown or list_view.index is None or list_view.index >= len(self.shown):
|
|||
|
|
return
|
|||
|
|
self._open(self.shown[list_view.index])
|
|||
|
|
|
|||
|
|
def _open(self, row: library.Row) -> None:
|
|||
|
|
if row.path is not None:
|
|||
|
|
self.app.push_screen(ReaderScreen(row.path))
|
|||
|
|
return
|
|||
|
|
cfg = config_mod.load()
|
|||
|
|
if cfg is None or row.server_id is None:
|
|||
|
|
self.notify("Nicht angemeldet — `diora-tui login`.", severity="error")
|
|||
|
|
return
|
|||
|
|
self.notify(f"Lade „{row.title}“ …", timeout=4)
|
|||
|
|
self._download_and_open(cfg, row)
|
|||
|
|
|
|||
|
|
@work(thread=True, exclusive=True, group="download")
|
|||
|
|
def _download_and_open(self, cfg: config_mod.RemoteConfig, row: library.Row) -> None:
|
|||
|
|
try:
|
|||
|
|
path = remote.download_book(self.library_dir, cfg, row.server_id, row.title)
|
|||
|
|
except remote.SyncError as e:
|
|||
|
|
self.app.call_from_thread(self.notify, str(e), severity="error", timeout=6)
|
|||
|
|
return
|
|||
|
|
self.app.call_from_thread(self.app.push_screen, ReaderScreen(path))
|
|||
|
|
|
|||
|
|
def on_list_view_selected(self, event: ListView.Selected) -> None:
|
|||
|
|
self.action_open_selected()
|