MusicServer/internal/db/queries/statistics.sql

-- Most played games with their songs
-- name: GetMostPlayedGamesWithSongs :many
SELECT 
    g.id as game_id,
    g.game_name,
    g.times_played as game_played,
    g.last_played as game_last_played,
    json_agg(
        json_build_object(
            'song_name', s.song_name,
            'path', s.path,
            'times_played', s.times_played,
            'file_name', s.file_name
        )
    ) as songs
FROM game g
LEFT JOIN song s ON g.id = s.game_id
WHERE g.deleted IS NULL
GROUP BY g.id, g.game_name, g.times_played, g.last_played
ORDER BY g.times_played DESC, g.game_name
LIMIT $1;

-- Least played games with their songs
-- name: GetLeastPlayedGamesWithSongs :many
SELECT 
    g.id as game_id,
    g.game_name,
    g.times_played as game_played,
    g.last_played as game_last_played,
    json_agg(
        json_build_object(
            'song_name', s.song_name,
            'path', s.path,
            'times_played', s.times_played,
            'file_name', s.file_name
        )
    ) as songs
FROM game g
LEFT JOIN song s ON g.id = s.game_id
WHERE g.deleted IS NULL
GROUP BY g.id, g.game_name, g.times_played, g.last_played
ORDER BY g.times_played ASC, g.game_name
LIMIT $1;

-- Most played songs with their game info
-- name: GetMostPlayedSongsWithGame :many
SELECT 
    s.game_id as game_id,
    g.game_name,
    s.song_name,
    s.path,
    s.times_played,
    s.file_name
FROM song s
JOIN game g ON s.game_id = g.id
WHERE g.deleted IS NULL
ORDER BY s.times_played DESC, s.song_name
LIMIT $1;

-- Least played songs with their game info
-- name: GetLeastPlayedSongsWithGame :many
SELECT 
    s.game_id as game_id,
    g.game_name,
    s.song_name,
    s.path,
    s.times_played,
    s.file_name
FROM song s
JOIN game g ON s.game_id = g.id
WHERE g.deleted IS NULL
ORDER BY s.times_played ASC, s.song_name
LIMIT $1;

-- Games that have never been played (times_played = 0)
-- name: GetNeverPlayedGames :many
SELECT 
    g.id as game_id,
    g.game_name,
    g.times_played as game_played,
    g.added,
    json_agg(
        json_build_object(
            'song_name', s.song_name,
            'path', s.path,
            'times_played', s.times_played
        )
    ) as songs
FROM game g
LEFT JOIN song s ON g.id = s.game_id
WHERE g.deleted IS NULL AND g.times_played = 0
GROUP BY g.id, g.game_name, g.times_played, g.added
ORDER BY g.game_name;

-- Last played games (most recently played)
-- name: GetLastPlayedGames :many
SELECT 
    g.id as game_id,
    g.game_name,
    g.times_played as game_played,
    g.last_played as game_last_played,
    json_agg(
        json_build_object(
            'song_name', s.song_name,
            'path', s.path,
            'times_played', s.times_played
        )
    ) as songs
FROM game g
LEFT JOIN song s ON g.id = s.game_id
WHERE g.deleted IS NULL AND g.last_played IS NOT NULL
GROUP BY g.id, g.game_name, g.times_played, g.last_played
ORDER BY g.last_played DESC
LIMIT $1;

-- Oldest played games (least recently played, but has been played at least once)
-- name: GetOldestPlayedGames :many
SELECT 
    g.id as game_id,
    g.game_name,
    g.times_played as game_played,
    g.last_played as game_last_played,
    json_agg(
        json_build_object(
            'song_name', s.song_name,
            'path', s.path,
            'times_played', s.times_played
        )
    ) as songs
FROM game g
LEFT JOIN song s ON g.id = s.game_id
WHERE g.deleted IS NULL AND g.last_played IS NOT NULL
GROUP BY g.id, g.game_name, g.times_played, g.last_played
ORDER BY g.last_played ASC
LIMIT $1;

-- Get statistics summary
-- name: GetStatisticsSummary :one
SELECT 
    COUNT(*) as total_games,
    SUM(CASE WHEN times_played > 0 THEN 1 ELSE 0 END) as played_games,
    SUM(CASE WHEN times_played = 0 THEN 1 ELSE 0 END) as never_played_games,
    COALESCE(SUM(times_played), 0)::bigint as total_game_plays,
    COALESCE(AVG(times_played), 0)::float as avg_game_plays,
    COALESCE(MAX(times_played), 0)::bigint as max_game_plays,
    COALESCE(MIN(times_played), 0)::bigint as min_game_plays
FROM game
WHERE deleted IS NULL;