feat: проверка существования канала при привязке

.env.example

@@ -4,3 +4,4 @@ LOGGER__APP_NAME="tgex-backend"
 LOGGER__PRETTY_CONSOLE=true
 TELEGRAM__TOKEN=your_bot_token_here
 JWT__SECRET_KEY=your_secret_key_here_please_generate_a_strong_random_string
+PARSER__URL=http://localhost:8080

migrations/models/0_20251215212038_init.py

@@ -10,9 +10,9 @@ async def upgrade(db: BaseDBAsyncClient) -> str:
     "created_at" TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
     "updated_at" TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
     "deleted_at" TIMESTAMPTZ,
-    "telegram_id" BIGINT UNIQUE,
+    "telegram_id" BIGINT NOT NULL UNIQUE,
-    "title" VARCHAR(255),
+    "title" VARCHAR(255) NOT NULL,
-    "username" VARCHAR(255),
+    "username" VARCHAR(255) NOT NULL UNIQUE,
     "access_hash" BIGINT,
     "pts" INT
 );
@@ -253,65 +253,65 @@ MODELS_STATE = (
     "JbuqhasPpKwj+tqiZMYBvSI5prJAbFDDNSPgzpyqH93/FAHZTfBR9nuYC7MLXzFM2+QdZk"
     "OsvjkWTMF4yt9wk2nvZkTfZGEY/6gWRL0pR3M6VupbJPWDbRKNjA973HiNtL7x0y8t+mfr"
     "76HARQ3nlZv+3abPJK1MTcTaqyjNAp3NTXWBISV9w66Ws4KGDdcEw9ZqWOfhfbuSuRgVs2"
-    "u4ZgV2dZ52g2bdEjO6r506QE1ijrkuLUTWt+xSmfPYZNsxUjFiSAJVAdO9/z0rOR7n9Ff+"
+    "u4ZgV2dZ52g2bdEjO6r506QE1ijrkuLUTWt+xSmfPYZNsxUjFiSALVej5oJQfknP7Kvz51"
-    "9anTOT4+6xwen56fdM/OTs4Pz0lZ64niWWcp1r7kr3lhGjYeTfgdhlgxVRQHlyxx9ARo3Q"
+    "OsfHZ53D49Pzk+7Z2cn54Tkpaz1SPOssxdyX/DUvTMPWowm/wxgrpori6JI1jp6ArVshgi"
-    "oRUMmrNHI8tBfST1FFeG4+kT87JycpkN31xtY6gZSK9HrByerYeWEMVwbSrf/ngDFYZ01I"
+    "p5lYZOdAvpp6giPDefyJ+dk5MUzO56Y2ulQEpF+r3gZHXsvDCIKwPp1v9z4BisUw2Ua++g"
-    "Vt0/1w+kJMvIMMQnyXjKN94jFSsZ7xvomrWM+KVpxMFNRNYpvV2Ido66Z93z49OuB6SXko"
+    "6wdSkmVkGOKTZDzlG/GRioVG/OYn63qG/NI04uAmIuuU3i5EO0fds+758WnXA9JLScPPxo"
-    "afjRUlVI/PASZAEx4k+flV0mdiKCcAqirJaIEwC9tLp+7nr2OkStYrxRF1qOXIbaeZa8bf"
+    "pSqsfnABegCQ+S/Pwq6TMxlBMAVZVktECYhe2lU/fz1zFSJeuV4og65HLkttPMyfS32z3c"
-    "bvdwU1nLL7oKKAsDaWKbEdC1/yG5NAh2K9uMw0qXyZyMRDI8sOgoImVRcdokIwUHhJgtQo"
+    "VNYCjK4DysJAmthmBHTtf0guDYLdyjbjsNJlMicjkQwPLDqaSFlUnDbJSMEBKWaLEKLzid"
-    "jOJ1pHS5ph4lmLziKaImFpbj01/W36S640RRUH5QW1WbKVm3eQqlsFS4FwBcIV6BsgXIFh"
+    "bRkmaYeNais4imSFiaW09Nf5v+kitOUc1BeUFtlnDl5h2kKlfBUiBdgXQFCgdIV2BYkK5A"
-    "QbgC4Sq7cJVXDSilBNQxBNevBZjoJ2MUTElqkuT3k9X3GwthWnfn/pqGeroL1Ieb3l9/hH"
+    "usouXeVVA6pVAnZCVDHRT8YomJLUJNHvJ6vvNxbCtO7O/TUN9XQXqA83vb/+CPX2wVC4do"
-    "r7YChcu8UDwPYHw8sInoYpmSvG2pt2Sg6vFhaqPHlECcsohq5fe3P4tsnK01mIhjFu9/pT"
+    "sHgO0PhpcRPA1TMleMtTftlBxeLSxUefKIEpZRDF2/9ubwbZOVp7MQDWPc7vWn/B130bIL"
-    "/o67aNkF7jFFhyRckRRCDkiS3T1yduPzDJ34PLELn0c7sC8JEBxXmNGZk0UXRtVCCkwh3A"
+    "3GOKDkm4IimEHJAku3vk7MbnGTrxeWIXPo92YF8SIDiuMKMzJ4sujKrVqNhZcD8sMS9UoL"
-    "9LzAsV6C8MIs3U/5MpQbhWldRg7SJrGSLgw/aq6c/GkvShnMBF6+0JdDHFj4FkHMbPmo6U"
+    "8wiDRzByCZEoRrVUkN4vBVLLKWIQI+bK+a/mwsSR/KCVy03p5AF1P8GEjGYfys6UiZ46/o"
-    "Of6K3mJTJ1u5+BZsq6nwxeQKkqxLrx5Nj/UR8p724tMCujfp9664NmsQV4BgpYpYTfiFJy"
+    "LTZ1spWLb8G2mgpfTK4gybr06tH0WB8h72kvPi2ge5N+74prswZxBQhWqojVhF94cmKjB4"
-    "c2eqA416uiDbS5gqfaM8Jtho4WyD1IU9JUWk40vYIgpoGYBpoLiGlgWBDTQEzL4QXmfkEz"
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-    "uyi5FarRKtbu+LV+MQ39XCrEIgXGQrjmds5xuzQYVkaxT5UB81mDTKjnFGYCVdaryWzQbs"
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-    "VFGYpGBWrCrdNMY1F7V0sIdIu8QsI66bMvKTDYc0hvSCbPy1AxoM5Anbd19bEzDAuo844a"
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-    "Fqjzri41va+oSCHPa8x47e0cqLtkUdnxjI+sfVVNSvAlcCtETPdIa2zb+Lsa3l4OuNZozP"
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-    "X5CT8UwuaxMmkSSVDshfCY6w0iUoisLdxlZVbXokCVLTn0tmnnIgW/EMRFVcHPNjYxdLO5"
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-    "T7teeG4vJc31z43AnSwLvCA9eWXKRi9QZc+jSQU/J3Ro5ADRKb6dAB4dHmYAkJRKvnqb5j"
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-    "HuO2Ldj/vOfUe41vuO1vYR3o2bjX7/H/FMJEI="
+    "37jnCt9x2t7SO8Gzcb/f4/gXYk2A=="
 )

migrations/models/1_20251215220358_update.py

@@ -0,0 +1,90 @@
+from tortoise import BaseDBAsyncClient
+
+RUN_IN_TRANSACTION = True
+
+
+async def upgrade(db: BaseDBAsyncClient) -> str:
+    return """
+        COMMENT ON COLUMN "placement"."status" IS 'ACTIVE: active
+ARCHIVED: archived';"""
+
+
+async def downgrade(db: BaseDBAsyncClient) -> str:
+    return """
+        COMMENT ON COLUMN "placement"."status" IS 'PENDING: pending
+ACTIVE: active
+DELETED: deleted
+ARCHIVED: archived';"""
+
+
+MODELS_STATE = (
+    "eJztXWtv2zgW/SuGP3WAbJE4zqPBYgHHUVNNHduwnXR2mkJQZMbRRpY8eiQNiv73JfWkJE"
+    "rRy5Zs3y9Fw5elc0mK5/Dy8ld7qc2RYnzsP4mqipT2RetXWxWXCP8nmnXQaourVZBBEkzx"
+    "QbHLSlShB8PURcnEyY+iYiCcNEeGpMsrU9ZUnKpaikISNQkXlNVFkGSp8j8WEkxtgcwnpO"
+    "OM7z9wsqzO0U9keH+unoVHGSnz0MPKc/Lbdrpgvq3stNtb/uqzXZL83IMgaYq1VIPSqzfz"
+    "SVP94pYlzz+SOiRvgVSkiyaaU69BntJ9YS/JeWKcYOoW8h91HiTM0aNoKQSM9r8fLVUiGL"
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+    "TdGpauMaACnpiLy2IJpxQK9wjikvERvUcM0IuHO36kfvP0VA9hIClIMe5sHswVcM0zZ+h/"
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+)

src/adapter/parser.py

@@ -0,0 +1,63 @@
+import logging
+from typing import Any
+
+import httpx
+from pydantic import BaseModel
+
+log = logging.getLogger(__name__)
+
+
+class FetchChannelResponse(BaseModel):
+    id: str
+    telegram_id: int
+    username: str
+    title: str
+    access_hash: int
+    pts: int
+
+
+class ParserClient:
+    def __init__(self, base_url: str, timeout: float = 5.0):
+        self.base_url = base_url.rstrip('/')
+        self.timeout = timeout
+
+    async def fetch_telegram_channel(self, username: str) -> FetchChannelResponse | None:
+        """
+        Проверяет существование канала в Telegram и получает его метаданные.
+
+        Returns:
+            FetchChannelResponse если канал найден
+            None если канал не найден (404)
+
+        Raises:
+            httpx.HTTPError для других ошибок (таймаут, network error, 5xx)
+        """
+        # Убираем @ если пользователь его указал
+        username = username.lstrip('@')
+
+        url = f'{self.base_url}/fetch-telegram-channel'
+        params = {'username': username}
+
+        async with httpx.AsyncClient(timeout=self.timeout) as client:
+            try:
+                response = await client.get(url, params=params)
+
+                if response.status_code == 404:
+                    log.info('Channel @%s not found in Telegram', username)
+                    return None
+
+                response.raise_for_status()
+                data: dict[str, Any] = response.json()
+                return FetchChannelResponse.model_validate(data)
+
+            except httpx.HTTPStatusError as e:
+                if e.response.status_code == 404:
+                    return None
+                log.error('Parser HTTP error for @%s: %s', username, e)
+                raise
+            except httpx.TimeoutException:
+                log.error('Parser timeout for @%s', username)
+                raise
+            except Exception as e:
+                log.error('Parser unexpected error for @%s: %s', username, e)
+                raise

src/config.py

@@ -12,6 +12,10 @@ class AppConfig(BaseModel):
     URL: str
 
 
+class ParserConfig(BaseModel):
+    URL: str
+
+
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(env_file='.env', case_sensitive=False, env_nested_delimiter='__')
 
@@ -20,6 +24,7 @@ class Settings(BaseSettings):
     logger: LoggerConfig
     telegram: TelegramConfig
     jwt: JWTConfig
+    parser: ParserConfig
 
 
 settings: Settings = load_settings(Settings)

src/controller/http/creatives.py

@@ -1,7 +1,7 @@
 import uuid
 from typing import Annotated
 
-from fastapi import Depends
+from fastapi import Depends, Query
 from fastapi.routing import APIRouter
 
 from src import deps, dto
@@ -44,11 +44,12 @@ async def get_creative(
 
 @creatives_router.post('')
 async def create_creative(
-    request: dto.CreateCreativeInput,
     workspace_id: uuid.UUID,
+    request: dto.CreateCreativeInput,
     current_user: Annotated[JWTPayload, Depends(deps.get_current_user)],
+    project_id: uuid.UUID = Query(),
 ) -> dto.CreativeOutput:
-    return await deps.get_usecase().create_creative(request, current_user.user_id, workspace_id)
+    return await deps.get_usecase().create_creative(request, project_id, current_user.user_id, workspace_id)
 
 
 @creatives_router.patch('/{creative_id}')

src/domain/__init__.py

@@ -49,6 +49,7 @@ __all__ = (
     'ChannelNotFound',
     'ChannelAlreadyExists',
     'ChannelNoAdminRights',
+    'TelegramChannelNotFound',
     'CreativeNotFound',
     'CreativeInUse',
     'PlacementNotFound',
@@ -70,6 +71,7 @@ from .error import (
     ProjectNotFound,
     PurchasePlanChannelNotFound,
     PurchasePlanNotFound,
+    TelegramChannelNotFound,
     UserByUsernameNotFound,
     UserNotFound,
     WorkspaceAccessDenied,

src/domain/channel.py

@@ -4,9 +4,9 @@ from .base import TimestampedModel
 
 
 class Channel(TimestampedModel):
-    telegram_id = fields.BigIntField(null=True, unique=True, index=True)
+    telegram_id = fields.BigIntField(unique=True, index=True)
-    title = fields.CharField(null=True, max_length=255)
+    title = fields.CharField(max_length=255)
-    username = fields.CharField(null=True, max_length=255, index=True)
+    username = fields.CharField(max_length=255, unique=True, index=True)
 
     access_hash = fields.BigIntField(null=True)
     pts = fields.IntField(null=True)

src/domain/error.py

@@ -31,6 +31,12 @@ def ChannelNotFound(channel_id: uuid.UUID | None = None) -> HTTPException:
     return HTTPException(status.HTTP_404_NOT_FOUND, f'Channel {channel_id} not found')
 
 
+def TelegramChannelNotFound(username: str) -> HTTPException:
+    return HTTPException(
+        status.HTTP_404_NOT_FOUND, f'Telegram channel @{username} not found or is not a public channel'
+    )
+
+
 def ProjectNotFound(project_id: uuid.UUID | None = None) -> HTTPException:
     if project_id is None:
         return HTTPException(status.HTTP_404_NOT_FOUND, 'Project not found')

src/domain/placement.py

@@ -15,9 +15,7 @@ if TYPE_CHECKING:
 
 
 class PlacementStatus(str, enum.Enum):
-    PENDING = 'pending'  # Ожидается публикация поста
     ACTIVE = 'active'  # Пост найден и отслеживается
-    DELETED = 'deleted'  # Пост удален из канала
     ARCHIVED = 'archived'  # Вручную архивировано
 
 

src/dto/creative.py

@@ -37,7 +37,6 @@ class GetCreativeInput(pydantic.BaseModel):
 class CreateCreativeInput(pydantic.BaseModel):
     name: str
     text: str
-    project_id: uuid.UUID
 
 
 class UpdateCreativeInput(pydantic.BaseModel):

src/dto/placement.py

@@ -22,9 +22,6 @@ class PlacementOutput(pydantic.BaseModel):
     invite_link: str
     status: domain.PlacementStatus
     subscriptions_count: int
-    views_count: int | None
-    views_availability: domain.PostViewsAvailability
-    last_views_fetch_at: datetime.datetime | None
     created_at: datetime.datetime
 
 

src/dto/purchase_plan.py

@@ -26,7 +26,7 @@ class GetPurchasePlanChannelsOutput(pydantic.BaseModel):
 
 
 class AttachChannelToPurchasePlanInput(pydantic.BaseModel):
-    username: str
+    username: str = pydantic.Field(pattern=r'^[^@]')
     status: PurchasePlanChannelStatus | None = None
     planned_cost: float | None = None
     comment: str | None = None

src/main.py

@@ -8,6 +8,7 @@ from shared import logger
 from shared.worker_base import WorkerConfig
 from src import deps
 from src.adapter.jwt import JWT
+from src.adapter.parser import ParserClient
 from src.adapter.postgres import Postgres
 from src.adapter.telegram_bot import TelegramBot
 from src.config import settings
@@ -36,11 +37,13 @@ logger.init(settings.logger)
 postgres = Postgres(settings.db)
 telegram = TelegramBot(settings.telegram, telegram_callback_router)
 jwt_encoder = JWT(settings.jwt)
+parser_client = ParserClient(base_url=settings.parser.URL)
 
 usecase = Usecase(
     database=postgres,
     telegram_bot=telegram,
     jwt_encoder=jwt_encoder,
+    parser_client=parser_client,
 )
 deps.set_usecase(usecase)
 

src/usecase/__init__.py

@@ -279,11 +279,22 @@ class JWTEncoder(typing.Protocol):
     def encode_access_token(self, user_id: UUID, telegram_id: int, username: str | None = None) -> str: ...
 
 
+class FetchChannelResponse(typing.Protocol):
+    telegram_id: int
+    username: str
+    title: str
+
+
+class ParserClient(typing.Protocol):
+    async def fetch_telegram_channel(self, username: str) -> FetchChannelResponse | None: ...
+
+
 @dataclass
 class Usecase:
     database: Database
     telegram_bot: TelegramBotWriter
     jwt_encoder: JWTEncoder
+    parser_client: ParserClient
 
     async def ensure_workspace_access(self, workspace_id: UUID, user_id: UUID) -> domain.Workspace:
         workspace = await self.database.get_workspace_for_user(workspace_id, user_id)

src/usecase/creative/create_creative.py

@@ -11,19 +11,19 @@ log = logging.getLogger(__name__)
 
 
 async def create_creative(
-    self: 'Usecase', input: dto.CreateCreativeInput, user_id: uuid.UUID, workspace_id: uuid.UUID
+    self: 'Usecase', input: dto.CreateCreativeInput, project_id: uuid.UUID, user_id: uuid.UUID, workspace_id: uuid.UUID
 ) -> dto.CreativeOutput:
     await self.ensure_workspace_permission(
         workspace_id,
         user_id,
         domain.PermissionKey.PROJECTS_WRITE,
-        for_project_id=input.project_id,
+        for_project_id=project_id,
     )
 
-    project = await self.database.get_project(workspace_id, project_id=input.project_id)
+    project = await self.database.get_project(workspace_id, project_id=project_id)
     if not project:
-        log.warning('User %s attempted to create creative for unavailable project %s', user_id, input.project_id)
+        log.warning('User %s attempted to create creative for unavailable project %s', user_id, project_id)
-        raise domain.ProjectNotFound(input.project_id)
+        raise domain.ProjectNotFound(project_id)
 
     creative = domain.Creative(
         name=input.name,

src/usecase/placement/create_placement.py

@@ -53,7 +53,7 @@ async def create_placement(
         comment=input.comment,
         invite_link_type=input.invite_link_type,
         invite_link=invite_link,
-        status=domain.PlacementStatus.PENDING,
+        status=domain.PlacementStatus.ACTIVE,
     )
 
     async with self.database.transaction():
@@ -78,8 +78,5 @@ async def create_placement(
         invite_link=placement.invite_link,
         status=placement.status,
         subscriptions_count=placement.subscriptions_count,
-        views_count=None,
-        views_availability=domain.PostViewsAvailability.UNKNOWN,
-        last_views_fetch_at=None,
         created_at=placement.created_at,
     )

src/usecase/placement/fetch_placement_post_cycle.py

@@ -10,7 +10,7 @@ log = logging.getLogger(__name__)
 
 
 async def fetch_placement_post_cycle(self: 'Usecase', interval_seconds: int) -> None:
-    log.info('Starting fetch_placement_post_cycle')
+    log.debug('Starting fetch_placement_post_cycle')
 
     # Получаем все placement без привязанного поста
     placements_without_post = (

src/usecase/placement/get_placement.py

@@ -54,8 +54,5 @@ async def get_placement(self: 'Usecase', input: dto.GetPlacementInput) -> dto.Pl
         invite_link=placement.invite_link,
         status=placement.status,
         subscriptions_count=placement.subscriptions_count,
-        views_count=views_count,
-        views_availability=views_availability,
-        last_views_fetch_at=last_views_fetch_at,
         created_at=placement.created_at,
     )

src/usecase/placement/get_placements.py

@@ -28,25 +28,12 @@ async def get_placements(self: 'Usecase', input: dto.GetPlacementsInput) -> dto.
         allowed_project_ids=allowed_project_ids,
     )
 
-    # Batch fetch views data for all posts
-    post_ids = [p.post.id for p in placements if p.post]
-    views_map = await self.database.get_latest_views_data_batch(post_ids) if post_ids else {}
-
-    # Build output DTOs
     placement_outputs = []
     for placement in placements:
-        # Compute post-related fields
         ad_post_url = None
-        views_count = None
-        views_availability = domain.PostViewsAvailability.UNKNOWN
-        last_views_fetch_at = None
 
         if placement.post:
             ad_post_url = generate_post_url(placement.post.channel.username, placement.post.message_id)
-            views_data = views_map.get(placement.post.id)
-            if views_data:
-                views_count, last_views_fetch_at = views_data
-                views_availability = domain.PostViewsAvailability.AVAILABLE
 
         placement_outputs.append(
             dto.PlacementOutput(
@@ -65,9 +52,6 @@ async def get_placements(self: 'Usecase', input: dto.GetPlacementsInput) -> dto.
                 invite_link=placement.invite_link,
                 status=placement.status,
                 subscriptions_count=placement.subscriptions_count,
-                views_count=views_count,
-                views_availability=views_availability,
-                last_views_fetch_at=last_views_fetch_at,
                 created_at=placement.created_at,
             )
         )

src/usecase/placement/update_placement.py

@@ -39,21 +39,11 @@ async def update_placement(
 
     await self.database.update_placement(placement)
 
-    # Compute post-related fields
     ad_post_url = None
-    views_count = None
-    views_availability = domain.PostViewsAvailability.UNKNOWN
-    last_views_fetch_at = None
 
     if placement.post:
         ad_post_url = generate_post_url(placement.post.channel.username, placement.post.message_id)
 
-        # Get latest views data
-        views_data = await self.database.get_latest_views_data(placement.post.id)
-        if views_data:
-            views_count, last_views_fetch_at = views_data
-            views_availability = domain.PostViewsAvailability.AVAILABLE
-
     return dto.PlacementOutput(
         id=placement.id,
         project_id=placement.project_id,
@@ -70,8 +60,5 @@ async def update_placement(
         invite_link=placement.invite_link,
         status=placement.status,
         subscriptions_count=placement.subscriptions_count,
-        views_count=views_count,
-        views_availability=views_availability,
-        last_views_fetch_at=last_views_fetch_at,
         created_at=placement.created_at,
     )

src/usecase/purchase_plan/attach_channel_to_purchase_plan.py

@@ -27,16 +27,20 @@ async def attach_channel_to_purchase_plan(
 
     plan = await self.ensure_active_purchase_plan(project)
 
-    # Поиск канала по username
     channel = await self.database.get_channel(username=input.username)
 
     if not channel:
-        # Создать канал с nullable telegram_id/title (заполнятся парсером позже)
+        parser_response = await self.parser_client.fetch_telegram_channel(input.username)
-        channel = domain.Channel(username=input.username)
+        if not parser_response:
+            raise domain.TelegramChannelNotFound(input.username)
+
+        channel = domain.Channel(
+            username=input.username,
+            telegram_id=parser_response.telegram_id,
+            title=parser_response.title,
+        )
         await self.database.create_channel(channel)
-        log.info('Created channel with username @%s (pending parser update)', input.username)
+        log.info('Created channel @%s with telegram_id=%s', input.username, parser_response.telegram_id)
-    else:
-        log.info('Found existing channel %s for username @%s', channel.id, input.username)
 
     plan_channel = await self.database.add_channel_to_purchase_plan(
         plan.id,