Reorganize Python stuff and add command to create packs

Fixes #11

1 files changed, 158 insertions, 0 deletions

diff --git a/sticker/import.py b/sticker/import.py
new file mode 100644
index 0000000..f350dc5
--- /dev/null
+++ b/sticker/import.py
@@ -0,0 +1,158 @@
+# Copyright (c) 2020 Tulir Asokan
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+from typing import Dict
+import argparse
+import asyncio
+import os.path
+import json
+import re
+
+from telethon import TelegramClient
+from telethon.tl.functions.messages import GetAllStickersRequest, GetStickerSetRequest
+from telethon.tl.types.messages import AllStickers
+from telethon.tl.types import InputStickerSetShortName, Document, DocumentAttributeSticker
+from telethon.tl.types.messages import StickerSet as StickerSetFull
+
+from .lib import matrix, util
+
+
+async def reupload_document(client: TelegramClient, document: Document) -> matrix.StickerInfo:
+    print(f"Reuploading {document.id}", end="", flush=True)
+    data = await client.download_media(document, file=bytes)
+    print(".", end="", flush=True)
+    data, width, height = util.convert_image(data)
+    print(".", end="", flush=True)
+    mxc = await matrix.upload(data, "image/png", f"{document.id}.png")
+    print(".", flush=True)
+    return util.make_sticker(mxc, width, height, len(data))
+
+
+def add_meta(document: Document, info: matrix.StickerInfo, pack: StickerSetFull) -> None:
+    for attr in document.attributes:
+        if isinstance(attr, DocumentAttributeSticker):
+            info["body"] = attr.alt
+    info["id"] = f"tg-{document.id}"
+    info["net.maunium.telegram.sticker"] = {
+        "pack": {
+            "id": str(pack.set.id),
+            "short_name": pack.set.short_name,
+        },
+        "id": str(document.id),
+        "emoticons": [],
+    }
+
+
+async def reupload_pack(client: TelegramClient, pack: StickerSetFull, output_dir: str) -> None:
+    if pack.set.animated:
+        print("Animated stickerpacks are currently not supported")
+        return
+
+    pack_path = os.path.join(output_dir, f"{pack.set.short_name}.json")
+    try:
+        os.mkdir(os.path.dirname(pack_path))
+    except FileExistsError:
+        pass
+
+    print(f"Reuploading {pack.set.title} with {pack.set.count} stickers "
+          f"and writing output to {pack_path}")
+
+    already_uploaded = {}
+    try:
+        with open(pack_path) as pack_file:
+            existing_pack = json.load(pack_file)
+            already_uploaded = {int(sticker["net.maunium.telegram.sticker"]["id"]): sticker
+                                for sticker in existing_pack["stickers"]}
+            print(f"Found {len(already_uploaded)} already reuploaded stickers")
+    except FileNotFoundError:
+        pass
+
+    reuploaded_documents: Dict[int, matrix.StickerInfo] = {}
+    for document in pack.documents:
+        try:
+            reuploaded_documents[document.id] = already_uploaded[document.id]
+            print(f"Skipped reuploading {document.id}")
+        except KeyError:
+            reuploaded_documents[document.id] = await reupload_document(client, document)
+        # Always ensure the body and telegram metadata is correct
+        add_meta(document, reuploaded_documents[document.id], pack)
+
+    for sticker in pack.packs:
+        if not sticker.emoticon:
+            continue
+        for document_id in sticker.documents:
+            doc = reuploaded_documents[document_id]
+            # If there was no sticker metadata, use the first emoji we find
+            if doc["body"] == "":
+                doc["body"] = sticker.emoticon
+            doc["net.maunium.telegram.sticker"]["emoticons"].append(sticker.emoticon)
+
+    with open(pack_path, "w") as pack_file:
+        json.dump({
+            "title": pack.set.title,
+            "id": f"tg-{pack.set.id}",
+            "net.maunium.telegram.pack": {
+                "short_name": pack.set.short_name,
+                "hash": str(pack.set.hash),
+            },
+            "stickers": list(reuploaded_documents.values()),
+        }, pack_file, ensure_ascii=False)
+    print(f"Saved {pack.set.title} as {pack.set.short_name}.json")
+
+    util.add_to_index(os.path.basename(pack_path), output_dir)
+
+
+pack_url_regex = re.compile(r"^(?:(?:https?://)?(?:t|telegram)\.(?:me|dog)/addstickers/)?"
+                            r"([A-Za-z0-9-_]+)"
+                            r"(?:\.json)?$")
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument("--list", help="List your saved sticker packs", action="store_true")
+parser.add_argument("--session", help="Telethon session file name", default="sticker-import")
+parser.add_argument("--config",
+                    help="Path to JSON file with Matrix homeserver and access_token",
+                    type=str, default="config.json")
+parser.add_argument("--output-dir", help="Directory to write packs to", default="web/packs/",
+                    type=str)
+parser.add_argument("pack", help="Sticker pack URLs to import", action="append", nargs="*")
+
+
+async def main(args: argparse.Namespace) -> None:
+    await matrix.load_config(args.config)
+    client = TelegramClient(args.session, 298751, "cb676d6bae20553c9996996a8f52b4d7")
+    await client.start()
+
+    if args.list:
+        stickers: AllStickers = await client(GetAllStickersRequest(hash=0))
+        index = 1
+        width = len(str(stickers.sets))
+        print("Your saved sticker packs:")
+        for saved_pack in stickers.sets:
+            print(f"{index:>{width}}. {saved_pack.title} "
+                  f"(t.me/addstickers/{saved_pack.short_name})")
+    elif args.pack[0]:
+        input_packs = []
+        for pack_url in args.pack[0]:
+            match = pack_url_regex.match(pack_url)
+            if not match:
+                print(f"'{pack_url}' doesn't look like a sticker pack URL")
+                return
+            input_packs.append(InputStickerSetShortName(short_name=match.group(1)))
+        for input_pack in input_packs:
+            pack: StickerSetFull = await client(GetStickerSetRequest(input_pack))
+            await reupload_pack(client, pack, args.output_dir)
+    else:
+        parser.print_help()
+
+    await client.disconnect()
+
+
+def cmd() -> None:
+    asyncio.get_event_loop().run_until_complete(main(parser.parse_args()))
+
+
+if __name__ == "__main__":
+    cmd()