package platform

import "strings"

func buildRawFrameSQL(database string, query RawFrameQuery) SQLQuery {
	table := qualifyTDengine(database, "raw_frames")
	where := []string{"1 = 1"}
	args := []any{}
	if query.Protocol != "" {
		where = append(where, "protocol = ?")
		args = append(args, query.Protocol)
	}
	if query.VIN != "" {
		where = append(where, "vin = ?")
		args = append(args, query.VIN)
	}
	if query.DateFrom != "" {
		where = append(where, "ts >= ?")
		args = append(args, query.DateFrom)
	}
	if query.DateTo != "" {
		where = append(where, "ts <= ?")
		args = append(args, query.DateTo)
	}
	limit := query.Limit
	if limit <= 0 {
		limit = 100
	}
	args = append(args, limit, query.Offset)
	return SQLQuery{
		Text: `SELECT ts, frame_id, event_time, received_at, raw_size_bytes, parsed_fields, parse_status, ` +
			`parse_error, source_endpoint, protocol, vehicle_key, vin, phone FROM ` + table +
			` WHERE ` + strings.Join(where, " AND ") + ` ORDER BY ts DESC LIMIT ? OFFSET ?`,
		Args: args,
	}
}

func buildHistoryLocationSQL(database string, query map[string]string) SQLQuery {
	table := qualifyTDengine(database, "vehicle_locations")
	where := []string{"1 = 1"}
	args := []any{}
	if protocol := strings.TrimSpace(query["protocol"]); protocol != "" {
		where = append(where, "protocol = ?")
		args = append(args, protocol)
	}
	if vin := strings.TrimSpace(query["vin"]); vin != "" {
		where = append(where, "vin = ?")
		args = append(args, vin)
	}
	limit, offset := parseLimitOffset(query["limit"], query["offset"])
	args = append(args, limit, offset)
	return SQLQuery{
		Text: `SELECT ts, vin, protocol, longitude, latitude, speed_kmh, total_mileage_km, event_time, received_at FROM ` +
			table + ` WHERE ` + strings.Join(where, " AND ") + ` ORDER BY ts DESC LIMIT ? OFFSET ?`,
		Args: args,
	}
}

func qualifyTDengine(database, table string) string {
	if strings.TrimSpace(database) == "" {
		return table
	}
	return database + "." + table
}