secstate/cloudcover
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Add min max

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This commit is contained in:
Colin Powell
2025-10-24 16:34:21 -04:00
parent 18b883ed24
commit 9eb48dca82
1 changed files with 83 additions and 17 deletions
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100
main.go
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@ -12,7 +12,7 @@ import (
"sync"
"time"
_ "modernc.org/sqlite" // lightweight pure-Go SQLite driver
_ "modernc.org/sqlite"
"gocv.io/x/gocv"
)
@ -23,6 +23,15 @@ type CloudResult struct {
Error string `json:"error,omitempty"`
}
type Summary struct {
From time.Time `json:"from"`
To time.Time `json:"to"`
Avg float64 `json:"avg"`
Min float64 `json:"min"`
Max float64 `json:"max"`
SampleCount int `json:"sample_count"`
}
var (
imageURL = getEnv("CLOUD_IMAGE_URL", "http://clouds.local:8082/snapshot")
refreshSecs = getEnvInt("CLOUD_REFRESH_SECONDS", 30)
@ -39,6 +48,7 @@ func main() {
http.HandleFunc("/", dashboardHandler)
http.HandleFunc("/cloudcover", handleLatest)
http.HandleFunc("/cloudtrend", handleTrend)
http.HandleFunc("/cloudsummary", handleSummary)
fmt.Printf("☁️ Cloud cover API started at http://localhost:8080\n")
fmt.Printf("🔁 Refresh every %ds | Source: %s | DB: %s\n", refreshSecs, imageURL, dbPath)
@ -104,7 +114,6 @@ func backgroundCollector() {
if err != nil {
result.Error = err.Error()
}
storeResult(result)
fmt.Printf("[%s] Cloud cover: %.2f%%\n", result.Timestamp.Format("15:04:05"), result.CloudCover)
time.Sleep(time.Duration(refreshSecs) * time.Second)
@ -170,13 +179,42 @@ func getAll(limit int) ([]CloudResult, error) {
results = append(results, r)
}
// Reverse to chronological order
// reverse chronological order
for i, j := 0, len(results)-1; i < j; i, j = i+1, j-1 {
results[i], results[j] = results[j], results[i]
}
return results, nil
}
func getSummary() (*Summary, error) {
since := time.Now().Add(-24 * time.Hour)
rows := db.QueryRow(`
SELECT
AVG(cloud_cover),
MIN(cloud_cover),
MAX(cloud_cover),
COUNT(*)
FROM cloud_trend
WHERE timestamp > ?
`, since.Format(time.RFC3339))
var s Summary
var avg, min, max sql.NullFloat64
var count int
if err := rows.Scan(&avg, &min, &max, &count); err != nil {
return nil, err
}
s.From = since
s.To = time.Now()
s.SampleCount = count
if avg.Valid {
s.Avg = avg.Float64
s.Min = min.Float64
s.Max = max.Float64
}
return &s, nil
}
func handleLatest(w http.ResponseWriter, r *http.Request) {
result, err := getLatest()
if err != nil {
@ -197,6 +235,16 @@ func handleTrend(w http.ResponseWriter, r *http.Request) {
json.NewEncoder(w).Encode(results)
}
func handleSummary(w http.ResponseWriter, r *http.Request) {
summary, err := getSummary()
if err != nil {
http.Error(w, err.Error(), 500)
return
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(summary)
}
func dashboardHandler(w http.ResponseWriter, r *http.Request) {
html := `
<!DOCTYPE html>
@ -207,50 +255,67 @@ func dashboardHandler(w http.ResponseWriter, r *http.Request) {
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<style>
body { font-family: sans-serif; background: #111; color: #eee; text-align: center; margin: 0; padding: 1em; }
.summary { margin: 1em auto; width: 80%%; background: #222; border-radius: 10px; padding: 1em; }
canvas { background: #222; border-radius: 10px; margin-top: 20px; max-width: 90vw; }
</style>
</head>
<body>
<h1>☁️ Cloud Cover Trend</h1>
<p>Source: <code>` + imageURL + `</code></p>
<div class="summary" id="summary">
<h3>Loading summary...</h3>
</div>
<canvas id="chart" width="800" height="400"></canvas>
<script>
const ctx = document.getElementById('chart');
const ctx = document.getElementById("chart");
const chart = new Chart(ctx, {
type: 'line',
type: "line",
data: {
labels: [],
datasets: [{
label: 'Cloud Cover (%)',
label: "Cloud Cover (%)",
data: [],
borderColor: '#4fc3f7',
backgroundColor: 'rgba(79,195,247,0.2)',
borderColor: "#4fc3f7",
backgroundColor: "rgba(79,195,247,0.2)",
fill: true,
tension: 0.3
}]
},
options: {
scales: {
x: { title: { display: true, text: 'Time' }, ticks: { color: '#aaa' } },
y: { beginAtZero: true, title: { display: true, text: 'Cloud %' }, ticks: { color: '#aaa' } }
x: { title: { display: true, text: "Time" }, ticks: { color: "#aaa" } },
y: { beginAtZero: true, title: { display: true, text: "Cloud %" }, ticks: { color: "#aaa" } }
},
plugins: {
legend: { labels: { color: '#ccc' } }
}
plugins: { legend: { labels: { color: "#ccc" } } }
}
});
async function fetchData() {
const res = await fetch('/cloudtrend');
async function fetchTrend() {
const res = await fetch("/cloudtrend");
const data = await res.json();
chart.data.labels = data.map(d => new Date(d.timestamp).toLocaleTimeString());
chart.data.datasets[0].data = data.map(d => d.cloud_cover);
chart.update();
}
fetchData();
setInterval(fetchData, 10000);
async function fetchSummary() {
const res = await fetch("/cloudsummary");
const s = await res.json();
document.getElementById("summary").innerHTML =
"<h3>Last 24 hours</h3>" +
"<p>Average: " + s.avg.toFixed(1) + "% &nbsp; | &nbsp;" +
"Min: " + s.min.toFixed(1) + "% &nbsp; | &nbsp;" +
"Max: " + s.max.toFixed(1) + "% &nbsp; | &nbsp;" +
"Samples: " + s.sample_count + "</p>";
}
fetchTrend();
fetchSummary();
setInterval(fetchTrend, 10000);
setInterval(fetchSummary, 60000);
</script>
</body>
</html>
@ -259,6 +324,7 @@ func dashboardHandler(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(html))
}
func getEnv(key, def string) string {
if v, ok := os.LookupEnv(key); ok {
return v