using MoShiro.Backend.Application;

namespace MoShiro.Backend.Storage.Sqlite;

public sealed class SqliteAuditStore : IAuditStore
{
    private readonly SqliteDatabase _db;

    public SqliteAuditStore(SqliteDatabase db)
    {
        _db = db;
    }

    public ValueTask AddAsync(AuditRecord record, CancellationToken ct) =>
        _db.ExecuteAsync(
            c => c.Exec(
                "INSERT INTO audit_log (at, user_id, actor, method, action, target, detail, remote, success) VALUES (@at, @uid, @actor, @method, @action, @target, @detail, @remote, @ok)",
                ("@at", record.AtMs), ("@uid", record.UserId), ("@actor", record.Actor), ("@method", record.Method), ("@action", record.Action),
                ("@target", record.Target), ("@detail", record.Detail), ("@remote", record.Remote), ("@ok", record.Success ? 1 : 0)),
            ct);

    public ValueTask<IReadOnlyList<AuditRecord>> ListAsync(AuditQuery query, CancellationToken ct) =>
        _db.ReadAsync<IReadOnlyList<AuditRecord>>(
            c => c.Query(
                "SELECT id, at, user_id, actor, method, action, target, detail, remote, success FROM audit_log " +
                "WHERE (@before IS NULL OR id < @before) AND (@actor IS NULL OR actor = @actor) AND (@action IS NULL OR action = @action) ORDER BY id DESC LIMIT @limit",
                r => new AuditRecord(r.GetInt64(0), r.GetInt64(1), r.NullableString(2), r.GetString(3), r.GetString(4), r.GetString(5), r.NullableString(6), r.NullableString(7), r.NullableString(8), r.GetInt64(9) != 0),
                ("@before", query.BeforeId), ("@actor", query.Actor), ("@action", query.Action), ("@limit", query.Limit)),
            ct);

    public ValueTask<int> DeleteOlderThanAsync(long cutoffMs, CancellationToken ct) =>
        _db.WriteAsync(c => c.Exec("DELETE FROM audit_log WHERE at < @cutoff", ("@cutoff", cutoffMs)), ct);
}