distraction.party/lib/pleroma/web/activity_pub/activity_pub.ex

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defmodule Pleroma.Web.ActivityPub.ActivityPub do
alias Pleroma.Repo
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alias Pleroma.{Activity, Object, Upload}
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import Ecto.Query
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def insert(map) when is_map(map) do
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map = Map.put_new_lazy(map, "id", &generate_activity_id/0)
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map = if map["object"] do
object = Map.put_new_lazy(map["object"], "id", &generate_object_id/0)
Map.put(map, "object", object)
else
map
end
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Repo.insert(%Activity{data: map})
end
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def generate_activity_id do
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generate_id("activities")
end
def generate_context_id do
generate_id("contexts")
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end
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def generate_object_id do
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generate_id("objects")
end
def generate_id(type) do
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"#{Pleroma.Web.base_url()}/#{type}/#{Ecto.UUID.generate}"
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end
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def fetch_public_activities(opts \\ %{}) do
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public = ["https://www.w3.org/ns/activitystreams#Public"]
fetch_activities(public, opts)
end
def fetch_activities(recipients, opts \\ %{}) do
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since_id = opts["since_id"] || 0
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query = from activity in Activity,
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limit: 20,
order_by: [desc: :inserted_at]
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query = Enum.reduce(recipients, query, fn (recipient, q) ->
map = %{ to: [recipient] }
from activity in q,
or_where: fragment(~s(? @> ?), activity.data, ^map)
end)
query = from activity in query,
where: activity.id > ^since_id
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Repo.all(query)
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|> Enum.reverse
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end
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def fetch_activities_for_context(context) do
query = from activity in Activity,
where: fragment("? @> ?", activity.data, ^%{ context: context })
Repo.all(query)
end
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def upload(%Plug.Upload{} = file) do
data = Upload.store(file)
Repo.insert(%Object{data: data})
end
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end