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515 lines
18 KiB
Go

// HTTP handlers for the races surface (list / upcoming / queue / plans).
//
// Routes:
//
// GET /api/races list races (keyset paginated)
// GET /api/races/upcoming next N lobby|countdown races
// POST /api/races/queue/join enqueue driver on the next N upcoming
// GET /api/races/queue list driver's queue entries
// DELETE /api/races/queue remove a single (driver, race) entry
// POST /api/races/plans create a race plan
// GET /api/races/plans list race plans (keyset paginated)
// DELETE /api/races/plans/{id} delete a plan
//
// Query parameters:
//
// GET /api/races:
// status comma-separated list, e.g. "racing,finished"
// track_id filter by physical track id (no custom lobbies yet)
// cursor opaque keyset cursor (returned in next_cursor)
// limit max items per page (default 50, max 200)
//
// GET /api/races/upcoming:
// limit number of races to return (default 3, max 16)
//
// GET /api/races/queue:
// driver_id (or X-Driver-Id header)
//
// GET /api/races/plans:
// cursor, limit
package main
import (
"encoding/json"
"errors"
"net/http"
"strconv"
"strings"
"github.com/x0gp/server/internal/lobby"
"github.com/x0gp/server/internal/races"
"github.com/x0gp/server/internal/transport"
)
// ---------------------------------------------------------------------------
// /api/races
// ---------------------------------------------------------------------------
// racesListHandler godoc
// @Summary List races (keyset paginated)
// @Description Returns one keyset page of races. Live races (status lobby|racing) come from in-memory lobby.Service; finished races come from Postgres. The two sources are merged and ordered by (started_ms DESC, id ASC). The cursor is opaque: pass back the next_cursor verbatim from a previous page.
// @Description ## Filters
// @Description - `status` (comma-separated, e.g. "racing,finished"). Recognised values: all, lobby, racing, finished.
// @Description - `track_id` (exact match against a physical track id; custom lobbies are not supported in this build).
// @Description - `limit` (1..200, default 50)
// @Tags races
// @Produce json
// @Param status query string false "Comma-separated status filter" Enums(all, lobby, racing, finished)
// @Param track_id query string false "Filter by physical track id"
// @Param cursor query string false "Opaque keyset cursor (next_cursor from previous page)"
// @Param limit query int false "Page size (1..200, default 50)"
// @Success 200 {object} transport.RaceListResponse "Page of races"
// @Failure 400 {object} map[string]interface{} "Bad request / invalid cursor / invalid status"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races [get]
func racesListHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
filter, err := parseRaceListFilter(r)
if err != nil {
writeError(w, http.StatusBadRequest, "bad_request", err.Error())
return
}
res, err := svc.ListRaces(r.Context(), filter)
if err != nil {
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
items := make([]transport.LobbyRace, 0, len(res.Items))
for _, it := range res.Items {
if it.Source == "finished" && len(it.Podium) > 0 {
items = append(items, lobbyToWireFinished(it.Meta, it.Podium))
} else {
items = append(items, lobbyToWire(it.Meta))
}
}
writeJSON(w, http.StatusOK, transport.RaceListResponse{
Items: items,
NextCursor: res.NextCursor,
Count: res.TotalCount,
})
}
}
func parseRaceListFilter(r *http.Request) (races.ListFilter, error) {
q := r.URL.Query()
cur, err := races.DecodeCursor(q.Get("cursor"))
if err != nil {
return races.ListFilter{}, err
}
statuses, err := races.ParseStatusFilter(q.Get("status"))
if err != nil {
return races.ListFilter{}, err
}
limit, _ := strconv.Atoi(q.Get("limit"))
return races.ListFilter{
Statuses: statuses,
TrackID: q.Get("track_id"),
Cursor: cur,
Limit: limit,
}, nil
}
// ---------------------------------------------------------------------------
// /api/races/upcoming
// ---------------------------------------------------------------------------
// racesUpcomingHandler godoc
// @Summary Next N upcoming races
// @Description Returns up to `limit` races currently in status lobby|countdown, ordered soonest first. Useful for the "join queue" UI and dashboard.
// @Tags races
// @Produce json
// @Param limit query int false "Number of races to return (1..16, default 3)"
// @Success 200 {object} transport.RaceUpcomingResponse "Upcoming races"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/upcoming [get]
func racesUpcomingHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
if limit <= 0 {
limit = 3
}
items, err := svc.Upcoming(r.Context(), limit)
if err != nil {
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
out := make([]transport.RaceUpcomingItem, 0, len(items))
for _, it := range items {
out = append(out, transport.RaceUpcomingItem{
Meta: lobbyToWire(it.Meta),
QueueLen: it.QueueLen,
PlanID: it.PlanID,
StartAtMs: it.StartAtMs,
})
}
writeJSON(w, http.StatusOK, transport.RaceUpcomingResponse{Items: out, Count: len(out)})
}
}
// ---------------------------------------------------------------------------
// /api/races/queue
// ---------------------------------------------------------------------------
// racesQueueJoinHandler godoc
// @Summary Enqueue driver on next N upcoming races
// @Description Puts the driver in the queue for each of the next N (default 3) lobby|countdown races, soonest first. If a race has a free slot, the driver is also attached to it (best effort). Idempotent per (driver, race).
// @Tags races
// @Accept json
// @Produce json
// @Param X-Driver-Id header string false "Driver id (alternative to body)"
// @Param body body transport.RaceQueueJoinRequest false "Driver id and optional limit"
// @Success 200 {object} transport.RaceQueueJoinResponse "Queue entries created"
// @Failure 400 {object} map[string]interface{} "driver_id required"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/queue/join [post]
func racesQueueJoinHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
var req transport.RaceQueueJoinRequest
if r.ContentLength > 0 {
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
writeError(w, http.StatusBadRequest, "bad_request", err.Error())
return
}
}
driverID := req.DriverID
if driverID == "" {
driverID = r.Header.Get("X-Driver-Id")
}
if driverID == "" {
driverID = r.URL.Query().Get("driver_id")
}
if driverID == "" {
writeError(w, http.StatusBadRequest, "bad_request", "driver_id required")
return
}
limit := req.Limit
if limit <= 0 {
limit = 3
}
res, err := svc.JoinUpcoming(r.Context(), driverID, limit)
if err != nil {
if errors.Is(err, races.ErrInvalidInput) {
writeError(w, http.StatusBadRequest, "invalid_input", err.Error())
return
}
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
joined := make([]transport.RaceQueueEntry, 0, len(res.Joined))
for _, q := range res.Joined {
joined = append(joined, transport.RaceQueueEntry{
DriverID: q.DriverID,
RaceID: q.RaceID,
PlanID: q.PlanID,
EnqueuedMs: q.EnqueuedMs,
})
}
writeJSON(w, http.StatusOK, transport.RaceQueueJoinResponse{
Joined: joined,
Skipped: res.Skipped,
})
}
}
// racesQueueListHandler godoc
// @Summary List driver's queue entries
// @Description Returns the queue entries for a driver, oldest first.
// @Tags races
// @Produce json
// @Param X-Driver-Id header string false "Driver id"
// @Param driver_id query string false "Driver id (alternative to header)"
// @Success 200 {object} transport.RaceQueueListResponse "Queue entries"
// @Failure 400 {object} map[string]interface{} "driver_id required"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/queue [get]
func racesQueueListHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
driverID := r.URL.Query().Get("driver_id")
if driverID == "" {
driverID = r.Header.Get("X-Driver-Id")
}
if driverID == "" {
writeError(w, http.StatusBadRequest, "bad_request", "driver_id required")
return
}
entries, err := svc.ListQueue(r.Context(), driverID)
if err != nil {
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
out := make([]transport.RaceQueueEntry, 0, len(entries))
for _, q := range entries {
out = append(out, transport.RaceQueueEntry{
DriverID: q.DriverID,
RaceID: q.RaceID,
PlanID: q.PlanID,
EnqueuedMs: q.EnqueuedMs,
})
}
writeJSON(w, http.StatusOK, transport.RaceQueueListResponse{Items: out, Count: len(out)})
}
}
// racesQueueDeleteHandler godoc
// @Summary Leave a queue entry
// @Description Removes a single (driver, race) entry from the queue. Does not detach the driver from the race if already joined.
// @Tags races
// @Produce json
// @Param X-Driver-Id header string false "Driver id"
// @Param driver_id query string false "Driver id"
// @Param race_id query string true "Race id"
// @Success 200 {object} map[string]interface{} "ok"
// @Failure 400 {object} map[string]interface{} "driver_id and race_id required"
// @Failure 404 {object} map[string]interface{} "queue entry not found"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/queue [delete]
func racesQueueDeleteHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
driverID := r.URL.Query().Get("driver_id")
raceID := r.URL.Query().Get("race_id")
if driverID == "" {
driverID = r.Header.Get("X-Driver-Id")
}
if driverID == "" || raceID == "" {
writeError(w, http.StatusBadRequest, "bad_request", "driver_id and race_id required")
return
}
if err := svc.LeaveQueue(r.Context(), driverID, raceID); err != nil {
if errors.Is(err, races.ErrNotFound) {
writeError(w, http.StatusNotFound, "not_found", "queue entry not found")
return
}
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
writeJSON(w, http.StatusOK, map[string]any{"ok": true})
}
}
// ---------------------------------------------------------------------------
// /api/races/plans
// ---------------------------------------------------------------------------
// racePlansCreateHandler godoc
// @Summary Create a race plan
// @Description Creates a recurring or one-off scheduled race. The scheduler materialises a lobby race when `next_fire_ms` <= now. If `interval_s` > 0 the plan repeats; if `count` > 0 the plan disables itself after that many fires.
// @Tags plans
// @Accept json
// @Produce json
// @Param plan body transport.RacePlanCreateRequest true "Plan to create"
// @Success 201 {object} transport.RacePlan "Created plan"
// @Failure 400 {object} map[string]interface{} "Invalid input"
// @Failure 409 {object} map[string]interface{} "Plan id already exists"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/plans [post]
func racePlansCreateHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
var req transport.RacePlanCreateRequest
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
writeError(w, http.StatusBadRequest, "bad_request", err.Error())
return
}
enabled := true
if req.Enabled != nil {
enabled = *req.Enabled
}
p, err := svc.CreatePlan(r.Context(), races.CreatePlanInput{
ID: req.ID,
Name: req.Name,
TrackID: req.TrackID,
MaxCars: req.MaxCars,
Laps: req.Laps,
TimeLimitS: req.TimeLimitS,
StartAtMs: req.StartAtMs,
IntervalS: req.IntervalS,
Count: req.Count,
Enabled: enabled,
})
if err != nil {
if errors.Is(err, races.ErrInvalidInput) {
writeError(w, http.StatusBadRequest, "invalid_input", err.Error())
return
}
if errors.Is(err, races.ErrAlreadyExists) {
writeError(w, http.StatusConflict, "already_exists", err.Error())
return
}
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
writeJSON(w, http.StatusCreated, racePlanToWire(p))
}
}
// racePlansListHandler godoc
// @Summary List race plans (keyset paginated)
// @Description Returns race plans in ascending start_at order. Pass back the `next_cursor` to get the next page.
// @Tags plans
// @Produce json
// @Param cursor query string false "Opaque keyset cursor"
// @Param limit query int false "Page size (default 50)"
// @Success 200 {object} transport.RacePlanListResponse "Page of plans"
// @Failure 400 {object} map[string]interface{} "Invalid cursor"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/plans [get]
func racePlansListHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
cur, err := races.DecodeCursor(r.URL.Query().Get("cursor"))
if err != nil {
writeError(w, http.StatusBadRequest, "bad_request", err.Error())
return
}
limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
if limit <= 0 {
limit = 50
}
plans, err := svc.ListPlans(r.Context(), cur, limit)
if err != nil {
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
hasMore := false
if len(plans) > limit {
hasMore = true
plans = plans[:limit]
}
out := make([]transport.RacePlan, 0, len(plans))
for _, p := range plans {
out = append(out, racePlanToWire(p))
}
nextCur := ""
if hasMore && len(out) > 0 {
last := out[len(out)-1]
nextCur = races.Cursor{Ms: last.StartAtMs, ID: last.ID}.Encode()
}
totalCount, err := svc.CountPlans(r.Context())
if err != nil {
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
writeJSON(w, http.StatusOK, transport.RacePlanListResponse{
Items: out,
NextCursor: nextCur,
Count: totalCount,
})
}
}
// racePlansDeleteHandler godoc
// @Summary Delete a race plan
// @Description Removes a plan by id. Materialised races already in the lobby are not affected.
// @Tags plans
// @Produce json
// @Param id path string true "Plan id"
// @Success 200 {object} map[string]interface{} "ok"
// @Failure 404 {object} map[string]interface{} "Plan not found"
// @Failure 500 {object} map[string]interface{} "Internal server error"
// @Router /api/races/plans/{id} [delete]
func racePlansDeleteHandler(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
id := strings.TrimPrefix(r.URL.Path, "/api/races/plans/")
if id == "" || strings.Contains(id, "/") {
writeError(w, http.StatusBadRequest, "bad_request", "missing plan id")
return
}
if err := svc.DeletePlan(r.Context(), id); err != nil {
if errors.Is(err, races.ErrNotFound) {
writeError(w, http.StatusNotFound, "not_found", "plan not found")
return
}
writeError(w, http.StatusInternalServerError, "internal", err.Error())
return
}
writeJSON(w, http.StatusOK, map[string]any{"ok": true, "id": id})
}
}
// ---------------------------------------------------------------------------
// Method routers
// ---------------------------------------------------------------------------
// racesQueueRouter routes /api/races/queue to GET (list) or DELETE (leave).
func racesQueueRouter(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case http.MethodGet:
racesQueueListHandler(svc)(w, r)
case http.MethodDelete:
racesQueueDeleteHandler(svc)(w, r)
default:
w.Header().Set("Allow", "GET DELETE")
writeError(w, http.StatusMethodNotAllowed, "method_not_allowed", r.Method)
}
}
}
// racePlansRouter routes /api/races/plans to GET (list) or POST (create).
func racePlansRouter(svc *races.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case http.MethodGet:
racePlansListHandler(svc)(w, r)
case http.MethodPost:
racePlansCreateHandler(svc)(w, r)
default:
w.Header().Set("Allow", "GET POST")
writeError(w, http.StatusMethodNotAllowed, "method_not_allowed", r.Method)
}
}
}
func lobbyToWire(m lobby.RaceMeta) transport.LobbyRace {
return transport.LobbyRace{
ID: m.ID,
Name: m.Name,
TrackID: m.TrackID,
MaxCars: m.MaxCars,
Laps: m.Laps,
TimeLimitS: m.TimeLimitS,
DriverIDs: append([]string(nil), m.DriverIDs...),
Status: string(m.Status),
CreatedMs: m.CreatedMs,
StartedMs: m.StartedMs,
}
}
// lobbyToWireFinished builds the wire form for a finished race and
// attaches the top-3 podium.
func lobbyToWireFinished(m lobby.RaceMeta, podium []races.PodiumEntry) transport.LobbyRace {
w := lobbyToWire(m)
if len(podium) > 0 {
w.Podium = make([]transport.RacePodiumEntry, 0, len(podium))
for _, p := range podium {
w.Podium = append(w.Podium, transport.RacePodiumEntry{
Position: p.Position,
DriverID: p.DriverID,
Name: p.Name,
TotalTimeMs: p.TotalTimeMs,
Nickname: p.Nickname,
AvatarUrl: p.AvatarUrl,
ClanID: p.ClanID,
})
}
}
return w
}
func racePlanToWire(p races.RacePlan) transport.RacePlan {
return transport.RacePlan{
ID: p.ID,
Name: p.Name,
TrackID: p.TrackID,
MaxCars: p.MaxCars,
Laps: p.Laps,
TimeLimitS: p.TimeLimitS,
StartAtMs: p.StartAtMs,
IntervalS: p.IntervalS,
Count: p.Count,
Enabled: p.Enabled,
CreatedMs: p.CreatedMs,
UpdatedMs: p.UpdatedMs,
NextFireMs: p.NextFireMs,
FiresDone: p.FiresDone,
}
}