import typing
from collections.abc import Sequence
from dataclasses import dataclass
from uuid import UUID

if typing.TYPE_CHECKING:
    from aiogram.types import InlineKeyboardButton

    from src.adapter.postgres import Postgres

from src import domain

from .analytics.get_channel_analytics import get_channel_analytics
from .analytics.get_creatives_analytics import get_creatives_analytics
from .analytics.get_overview_analytics import get_overview_analytics
from .analytics.get_placements_analytics import get_placements_analytics
from .analytics.get_projects_analytics import get_projects_analytics
from .analytics.get_spending_analytics import get_spending_analytics
from .auth.attach_login_token_message import attach_login_token_message
from .auth.create_telegram_login_token import create_telegram_login_token
from .auth.get_jwt_by_telegram_id import get_jwt_by_telegram_id
from .auth.get_me import get_me
from .auth.validate_login_token import validate_login_token
from .channel.attach_channel_to_workspace import attach_channel_to_workspace
from .channel.create_channels import create_channels
from .channel.get_channel import get_channel
from .channel.get_channels import get_channels
from .creative.create_creative import create_creative
from .creative.delete_creative import delete_creative
from .creative.get_creative import get_creative
from .creative.get_creatives import get_creatives
from .creative.update_creative import update_creative
from .placement.fetch_placement_post_cycle import fetch_placement_post_cycle
from .placement.update_post_status_cycle import update_post_status_cycle
from .project.archive_project import archive_project, unarchive_project
from .project.delete_project import delete_project
from .project.disconnect_project_by_tg_id import disconnect_project_by_tg_id
from .project.get_project import get_project
from .project.get_workspace_projects import get_workspace_projects
from .project.move_project_to_workspace import move_project_to_workspace
from .project.tg_add_project import tg_add_project
from .project.update_project_invite_link_type import update_project_invite_link_type
from .project.update_project_permissions import update_project_permissions
from .purchase.build_placement_creative import build_placement_creative
from .purchase.create_placements import create_placements
from .purchase.delete_placement import delete_placement
from .purchase.get_placement import get_placement_user
from .purchase.get_placements import get_placements
from .purchase.update_placement import update_placement
from .purchase.update_placement_post import update_placement_post
from .subscription.handle_subscription import handle_subscription
from .subscription.handle_unsubscription import handle_unsubscription
from .views.get_views_history import get_views_history
from .workspace.accept_workspace_invite import accept_workspace_invite
from .workspace.create_workspace import create_workspace
from .workspace.create_workspace_invite import create_workspace_invite
from .workspace.delete_workspace import delete_workspace
from .workspace.delete_workspace_avatar import delete_workspace_avatar
from .workspace.get_workspace_invites import get_workspace_invites
from .workspace.get_workspace_members import get_workspace_members
from .workspace.get_workspaces import get_workspaces
from .workspace.tg_accept_workspace_invite import tg_accept_workspace_invite
from .workspace.update_workspace import update_workspace
from .workspace.update_workspace_avatar import update_workspace_avatar
from .workspace.update_workspace_member_permissions import update_workspace_member_permissions


class MediaItem(typing.Protocol):
    media_type: str
    media_file_id: str


class TelegramBotWriter(typing.Protocol):
    async def send_message(
        self,
        text: str,
        chat_id: int,
        parse_mode: str | None = None,
        disable_preview: bool = False,
        reply_to_message_id: int | None = None,
    ) -> int: ...

    async def send_message_with_inline_keyboard(
        self,
        text: str,
        chat_id: int,
        buttons: list[list['InlineKeyboardButton']],
        parse_mode: str | None = None,
        disable_preview: bool = False,
        reply_to_message_id: int | None = None,
    ) -> int: ...

    async def send_media_with_inline_keyboard(
        self,
        text: str,
        chat_id: int,
        media_type: str,
        media_file_id: str,
        buttons: list[list['InlineKeyboardButton']],
        parse_mode: str | None = None,
        reply_to_message_id: int | None = None,
    ) -> int: ...

    async def send_media_group(
        self,
        chat_id: int,
        media_items: Sequence[MediaItem],
        caption: str | None = None,
        parse_mode: str | None = None,
        reply_to_message_id: int | None = None,
    ) -> int: ...

    async def edit_message_text(self, text: str, chat_id: int, message_id: int) -> None: ...

    async def edit_message_reply_markup(self, chat_id: int, message_id: int) -> None: ...

    async def create_chat_invite_link(
        self, chat_id: int, requires_approval: bool = False, name: str | None = None
    ) -> str: ...


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 | None
    title: str | None
    access_hash: int | None
    pts: int | None


class Parser(typing.Protocol):
    async def fetch_telegram_channel(self, username: str) -> FetchChannelResponse | None: ...
    async def resolve_telegram_channel_by_invite(self, invite_link: str) -> FetchChannelResponse | None: ...


class S3Storage(typing.Protocol):
    async def upload(self, key: str, data: bytes, content_type: str) -> None: ...

    async def get(self, key: str) -> bytes: ...

    async def delete(self, key: str) -> None: ...

    def public_url(self, key: str) -> str: ...


@dataclass
class Usecase:
    database: 'Postgres'
    telegram_bot: TelegramBotWriter
    jwt_encoder: JWTEncoder
    parser: Parser
    s3: S3Storage

    async def ensure_workspace_permission(
        self, workspace_id: UUID, user_id: UUID, permission: domain.PermissionKey, *, for_project_id: UUID | None = None
    ) -> domain.WorkspacePermissionContext:
        membership = await self.database.get_workspace_membership(workspace_id, user_id)
        if not membership or not membership.workspace:
            raise domain.WorkspaceNotFound(workspace_id)

        permissions = domain.WorkspacePermissions.from_membership(membership)

        if for_project_id is not None:
            has_permission = permissions.has_permission(
                permission,
                scope_type=domain.PermissionScopeType.PROJECT,
                scope_id=for_project_id,
            )
        else:
            has_permission = permissions.has_any(permission)

        if not has_permission:
            raise domain.WorkspaceAccessDenied(workspace_id)

        return domain.build_workspace_permission_context(membership)

    async def ensure_analytics_permission(
        self, workspace_id: UUID, user_id: UUID, *, for_project_id: UUID | None = None
    ) -> domain.WorkspacePermissionContext:
        """Ensure user has any analytics permission."""
        membership = await self.database.get_workspace_membership(workspace_id, user_id)
        if not membership or not membership.workspace:
            raise domain.WorkspaceNotFound(workspace_id)

        permissions = domain.WorkspacePermissions.from_membership(membership)

        if not permissions.has_any_analytics_permission():
            raise domain.WorkspaceAccessDenied(workspace_id)

        return domain.build_workspace_permission_context(membership)

    async def get_or_create_personal_workspace(self, user: domain.User) -> domain.Workspace:
        workspace = await self.database.get_default_workspace_for_user(user.id)
        if workspace:
            return workspace

        if not user.telegram_user:
            raise domain.UserNotFound(user.id)

        telegram_user = user.telegram_user
        workspace_name = telegram_user.username or f'Workspace {telegram_user.telegram_id}'
        workspace = domain.Workspace(name=workspace_name)

        async with self.database.transaction():
            await self.database.create_workspace(workspace)
            membership = await self.database.add_user_to_workspace(workspace.id, user.id)
            await self.database.set_workspace_user_permissions(
                membership.id,
                global_permissions={domain.PermissionKey.ADMIN_FULL},
                scoped_permissions=[],
            )

        return workspace

    validate_login_token = validate_login_token
    create_telegram_login_token = create_telegram_login_token
    attach_login_token_message = attach_login_token_message
    get_jwt_by_telegram_id = get_jwt_by_telegram_id
    get_me = get_me
    tg_add_project = tg_add_project
    get_workspace_projects = get_workspace_projects
    get_project = get_project
    archive_project = archive_project
    unarchive_project = unarchive_project
    delete_project = delete_project
    move_project_to_workspace = move_project_to_workspace
    disconnect_project_by_tg_id = disconnect_project_by_tg_id
    update_project_permissions = update_project_permissions
    update_project_invite_link_type = update_project_invite_link_type
    get_channels = get_channels
    create_channels = create_channels
    get_channel = get_channel
    attach_channel_to_workspace = attach_channel_to_workspace
    # Placement (user-managed) use cases
    create_placements = create_placements
    get_placements = get_placements
    get_placement_user = get_placement_user
    build_placement_creative = build_placement_creative
    update_placement = update_placement
    update_placement_post = update_placement_post
    delete_placement = delete_placement
    # Creative use cases
    get_creatives = get_creatives
    get_creative = get_creative
    create_creative = create_creative
    update_creative = update_creative
    delete_creative = delete_creative
    # PlacementPost (system-managed) use cases
    fetch_placement_post_cycle = fetch_placement_post_cycle
    update_post_status_cycle = update_post_status_cycle
    handle_subscription = handle_subscription
    handle_unsubscription = handle_unsubscription
    get_views_history = get_views_history
    get_placements_analytics = get_placements_analytics
    get_creatives_analytics = get_creatives_analytics
    get_channel_analytics = get_channel_analytics
    get_projects_analytics = get_projects_analytics
    get_spending_analytics = get_spending_analytics
    get_overview_analytics = get_overview_analytics
    get_workspaces = get_workspaces
    create_workspace = create_workspace
    update_workspace = update_workspace
    delete_workspace = delete_workspace
    update_workspace_avatar = update_workspace_avatar
    delete_workspace_avatar = delete_workspace_avatar
    get_workspace_members = get_workspace_members
    update_workspace_member_permissions = update_workspace_member_permissions
    create_workspace_invite = create_workspace_invite
    get_workspace_invites = get_workspace_invites
    accept_workspace_invite = accept_workspace_invite
    tg_accept_workspace_invite = tg_accept_workspace_invite