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feat(live): add web track map (#32)

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Subscribe to SignalR Position.z and CarData.z, decode DEFLATE payloads, stream throttled positions over SSE, and render live car dots against cached track outline bounds with tap telemetry.

Alignment spike: no checked-in or locally cached real Position.z samples were available in this isolated worktree; verified both streams expose the official raw F1 X/Y/Z coordinate contract and implemented shared-bounds normalization against prefetched OpenF1 outlines. Fallback build-outline-from-stream was not taken.

Playwright remains out of scope for live rendering because BOXBOX_DISABLE_LIVE is used there; coverage is via parser, web handler/SSE, pure transform, and seeded component tests.
This commit is contained in:
Aman Tahiliani
2026-07-03 19:34:09 -04:00
committed by GitHub
parent 5408a45bbd
commit 7263949260
15 changed files with 1076 additions and 18 deletions
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81
internal/live/parser_test.go
View File

@@ -1,6 +1,9 @@
package live_test
import (
"bytes"
"compress/flate"
"encoding/base64"
"encoding/json"
"testing"
"time"
@@ -158,6 +161,64 @@ func TestProcessTopicTimingData(t *testing.T) {
}
}
func TestProcessTopicCompressedPositionAndCarData(t *testing.T) {
state := live.NewState()
positionPayload := `{
"Position": [
{"Timestamp": "2026-07-03T14:00:00Z", "Entries": {
"1": {"Status": "OnTrack", "X": 1000, "Y": -200, "Z": 3},
"44": {"Status": "OffTrack", "X": 1200, "Y": -250, "Z": 2}
}}
]
}`
if !state.ProcessTopic("Position.z", encodedDeflatePayload(t, positionPayload)) {
t.Fatal("Position.z should update state")
}
snap := state.Snapshot()
if !snap.PositionUpdated || snap.SnapshotUpdated {
t.Fatalf("position flags = position:%v snapshot:%v", snap.PositionUpdated, snap.SnapshotUpdated)
}
if got := snap.Positions["1"]; got.X != 1000 || got.Y != -200 || got.Z != 3 || got.Status != "OnTrack" {
t.Fatalf("position 1 = %+v", got)
}
if got := snap.Positions["44"]; got.Status != "OffTrack" {
t.Fatalf("position 44 = %+v", got)
}
carPayload := `{
"Entries": [
{"Utc": "2026-07-03T14:00:00Z", "Cars": {
"1": {"Channels": {"0": 11234, "2": 318, "3": 8, "4": 92, "5": 0, "45": 10}}
}}
]
}`
if !state.ProcessTopic("CarData.z", encodedDeflatePayload(t, carPayload)) {
t.Fatal("CarData.z should update state")
}
snap = state.Snapshot()
if !snap.SnapshotUpdated {
t.Fatal("CarData should mark snapshot updated")
}
tel := snap.Telemetry["1"]
if tel.RPM != 11234 || tel.Speed != 318 || tel.NGear != 8 || tel.Throttle != 92 || tel.Brake != 0 || tel.DRS != 10 {
t.Fatalf("telemetry = %+v", tel)
}
}
func TestProcessTopicSessionInfoCircuitName(t *testing.T) {
state := live.NewState()
state.ProcessTopic("SessionInfo", json.RawMessage(`{
"Meeting": {"Name": "British Grand Prix", "Circuit": {"ShortName": "Silverstone"}},
"Name": "Race",
"Type": "Race"
}`))
s := state.Snapshot().Session
if s.MeetingName != "British Grand Prix" || s.CircuitName != "Silverstone" {
t.Fatalf("session = %+v", s)
}
}
func TestProcessTopicDriverList(t *testing.T) {
state := live.NewState()
data := json.RawMessage(`{"63": {"RacingNumber": "63", "Tla": "RUS", "TeamName": "Mercedes", "TeamColour": "27F4D2"}}`)
@@ -356,3 +417,23 @@ func TestProcessMessageEmptyPayload(t *testing.T) {
t.Error("empty envelope should not update state")
}
}
func encodedDeflatePayload(t *testing.T, payload string) json.RawMessage {
t.Helper()
var buf bytes.Buffer
w, err := flate.NewWriter(&buf, flate.DefaultCompression)
if err != nil {
t.Fatalf("flate.NewWriter() error = %v", err)
}
if _, err := w.Write([]byte(payload)); err != nil {
t.Fatalf("flate write error = %v", err)
}
if err := w.Close(); err != nil {
t.Fatalf("flate close error = %v", err)
}
raw, err := json.Marshal(base64.StdEncoding.EncodeToString(buf.Bytes()))
if err != nil {
t.Fatalf("marshal payload error = %v", err)
}
return raw
}