Claudio Ortolina
119 lines
3.2 KiB
Elixir
119 lines
3.2 KiB
Elixir
defmodule MusicLibrary.Collection do
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import Ecto.Query, warn: false
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alias MusicLibrary.Records
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alias MusicLibrary.Records.{Record, SearchIndex}
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alias MusicLibrary.Repo
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def search_records(query, opts \\ []) do
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limit = Keyword.get(opts, :limit, 20)
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offset = Keyword.get(opts, :offset, 0)
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order = Keyword.get(opts, :order, :alphabetical)
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Records.search_records(base_search(), query, limit: limit, offset: offset, order: order)
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end
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def search_records_count(query) do
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Records.search_records_count(base_search(), query)
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end
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def count_records_by_format do
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q =
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from r in Record,
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where: not is_nil(r.purchased_at),
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group_by: r.format,
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order_by: [desc: count(r.id)],
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select: {r.format, count(r.id)}
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Repo.all(q)
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end
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def count_records_by_type do
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q =
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from r in Record,
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where: not is_nil(r.purchased_at),
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group_by: r.type,
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order_by: [desc: count(r.id)],
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select: {r.type, count(r.id)}
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Repo.all(q)
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end
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def get_latest_record! do
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q =
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from r in Record,
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where: not is_nil(r.purchased_at),
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order_by: [desc: r.purchased_at],
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limit: 1,
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select: ^Records.essential_fields()
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Repo.one!(q)
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end
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def get_random_record! do
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q =
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from r in Record,
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where: not is_nil(r.purchased_at),
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order_by: fragment("RANDOM()"),
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limit: 1,
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select: ^Records.essential_fields()
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Repo.one!(q)
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end
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def collected_releases(release_ids) do
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q =
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from r in fragment("records, json_each(records.release_ids)"),
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where: r.value in ^release_ids,
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where: fragment("records.purchased_at IS NOT NULL"),
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select: %{record_id: fragment("records.id"), release_id: r.value}
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Repo.all(q)
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end
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@doc """
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Returns a list of tuples containing artist names and their record count,
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ordered by count in descending order.
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q =
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from r in fragment("records, json_each(records.release_ids)"),
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where: fragment("records.format = ?", ^format) and r.value == ^release_id,
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select: %{
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record_id: fragment("records.id"),
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purchased_at: fragment("records.purchased_at")
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}
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"""
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def count_records_by_artist(limit \\ 30) do
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q =
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from r in fragment("records, json_each(records.artists)"),
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where: fragment("records.purchased_at IS NOT NULL"),
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group_by: fragment("json_extract(?, '$.name')", r.value),
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order_by: [desc: fragment("count(1)")],
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select: {fragment("json_extract(?, '$.name')", r.value), fragment("count(1)")},
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limit: ^limit
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Repo.all(q)
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end
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@doc """
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Returns a list of tuples containing genre names and their record count,
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ordered by count in descending order.
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"""
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def count_records_by_genre(limit \\ 30) do
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q =
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from r in fragment("records, json_each(records.genres)"),
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where: fragment("records.purchased_at IS NOT NULL"),
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group_by: r.value,
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order_by: [desc: fragment("count(1)")],
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select: {r.value, fragment("count(1)")},
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limit: ^limit
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Repo.all(q)
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end
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defp base_search do
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from r in SearchIndex,
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where: not is_nil(r.purchased_at)
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end
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end
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