Files
music_library/lib/music_library/collection.ex
T
Claudio Ortolina a63f2de60b Use ->> instead of json_extract in queries
Improves readability of queries.
2025-06-06 21:05:44 +01:00

112 lines
2.9 KiB
Elixir

defmodule MusicLibrary.Collection do
import Ecto.Query, warn: false
import MusicLibrary.Records, only: [order_alphabetically: 0]
alias MusicLibrary.Records
alias MusicLibrary.Records.{Record, SearchIndex}
alias MusicLibrary.Repo
def search_records(query, opts \\ []) do
limit = Keyword.get(opts, :limit, 20)
offset = Keyword.get(opts, :offset, 0)
order = Keyword.get(opts, :order, :alphabetical)
Records.search_records(base_search(), query, limit: limit, offset: offset, order: order)
end
def search_records_count(query) do
Records.search_records_count(base_search(), query)
end
def count_records_by_format do
q =
from r in Record,
where: not is_nil(r.purchased_at),
group_by: r.format,
order_by: [desc: count(r.id)],
select: {r.format, count(r.id)}
Repo.all(q)
end
def count_records_by_type do
q =
from r in Record,
where: not is_nil(r.purchased_at),
group_by: r.type,
order_by: [desc: count(r.id)],
select: {r.type, count(r.id)}
Repo.all(q)
end
def get_latest_record! do
q =
from r in Record,
where: not is_nil(r.purchased_at),
order_by: [{:desc, r.purchased_at}, order_alphabetically()],
limit: 1,
select: ^Records.essential_fields()
Repo.one!(q)
end
def get_random_record! do
q =
from r in Record,
where: not is_nil(r.purchased_at),
order_by: fragment("RANDOM()"),
limit: 1,
select: ^Records.essential_fields()
Repo.one!(q)
end
def collected_releases(release_ids) do
q =
from r in fragment("records, json_each(records.release_ids)"),
where: r.value in ^release_ids,
where: fragment("records.purchased_at IS NOT NULL"),
select: %{record_id: fragment("records.id"), release_id: r.value}
Repo.all(q)
end
def count_records_by_artist(opts \\ []) do
limit = Keyword.get(opts, :limit, 30)
q =
from r in fragment("records, json_each(records.artists)"),
where: fragment("records.purchased_at IS NOT NULL"),
group_by: fragment("? ->> '$.name'", r.value),
order_by: [desc: fragment("count(1)")],
select: %{
id: fragment("? ->> '$.musicbrainz_id'", r.value),
name: fragment("? ->> '$.name'", r.value),
count: fragment("count(1)")
},
limit: ^limit
Repo.all(q)
end
def count_records_by_genre(opts \\ []) do
limit = Keyword.get(opts, :limit, 30)
q =
from r in fragment("records, json_each(records.genres)"),
where: fragment("records.purchased_at IS NOT NULL"),
group_by: r.value,
order_by: [desc: fragment("count(1)")],
select: {r.value, fragment("count(1)")},
limit: ^limit
Repo.all(q)
end
defp base_search do
from r in SearchIndex,
where: not is_nil(r.purchased_at)
end
end