Files
backend_fiesta/scratch/backfill_location_coordinates.go
2026-07-27 11:42:32 +05:30

147 lines
3.7 KiB
Go

//go:build ignore
package main
import (
"database/sql"
"encoding/json"
"fmt"
"log"
"net/http"
"net/url"
"strings"
"time"
_ "github.com/jackc/pgx/v5/stdlib"
)
// One-off backfill for tenants/tenantlocations rows that were onboarded
// before the admin console geocoded addresses automatically, so their
// latitude/longitude columns were left blank. Geocodes each row's existing
// address via OpenStreetMap Nominatim (same keyless provider
// AddressAutocomplete.tsx already uses on the frontend) and writes the
// result back. Run manually: `go run scratch/backfill_location_coordinates.go`
// — do not wire this into any request path, it's a single pass over
// historical rows.
const nominatimURL = "https://nominatim.openstreetmap.org/search"
// Nominatim's usage policy caps free lookups at ~1 request/sec.
const rateLimit = 1100 * time.Millisecond
type nominatimRow struct {
Lat string `json:"lat"`
Lon string `json:"lon"`
}
func geocode(client *http.Client, address string) (lat, lon string, ok bool) {
q := url.Values{}
q.Set("format", "json")
q.Set("limit", "1")
q.Set("q", address)
req, err := http.NewRequest("GET", nominatimURL+"?"+q.Encode(), nil)
if err != nil {
return "", "", false
}
// Required by Nominatim's usage policy — identifies the calling app.
req.Header.Set("User-Agent", "fiesta-backend-backfill/1.0 (care@nearle.in)")
resp, err := client.Do(req)
if err != nil {
fmt.Printf(" geocode request error: %v\n", err)
return "", "", false
}
defer resp.Body.Close()
var rows []nominatimRow
if err := json.NewDecoder(resp.Body).Decode(&rows); err != nil || len(rows) == 0 {
return "", "", false
}
return rows[0].Lat, rows[0].Lon, true
}
type row struct {
id int
address string
}
func backfillTable(db *sql.DB, client *http.Client, table, idCol string) {
fmt.Printf("\n=== %s ===\n", table)
query := fmt.Sprintf(`
SELECT %s,
TRIM(BOTH ', ' FROM CONCAT_WS(', ', address, suburb, city, state, postcode))
FROM %s
WHERE (latitude IS NULL OR latitude = '' OR latitude = '0')
AND (address IS NOT NULL AND address <> '')`, idCol, table)
rows, err := db.Query(query)
if err != nil {
log.Fatalf("%s: query error: %v", table, err)
}
var targets []row
for rows.Next() {
var r row
if err := rows.Scan(&r.id, &r.address); err != nil {
log.Fatalf("%s: scan error: %v", table, err)
}
targets = append(targets, r)
}
rows.Close()
fmt.Printf("Found %d row(s) missing coordinates.\n", len(targets))
updated, skipped := 0, 0
for i, r := range targets {
if i > 0 {
time.Sleep(rateLimit)
}
lat, lon, ok := geocode(client, r.address)
if !ok {
fmt.Printf(" [%s=%d] %q — geocode FAILED, left untouched\n", idCol, r.id, r.address)
skipped++
continue
}
res, err := db.Exec(
fmt.Sprintf(`UPDATE %s SET latitude = $1, longitude = $2 WHERE %s = $3`, table, idCol),
lat, lon, r.id,
)
if err != nil {
fmt.Printf(" [%s=%d] update error: %v\n", idCol, r.id, err)
skipped++
continue
}
n, _ := res.RowsAffected()
if n > 0 {
fmt.Printf(" [%s=%d] %q -> lat=%s lon=%s\n", idCol, r.id, r.address, lat, lon)
updated++
}
}
fmt.Printf("%s: updated=%d skipped=%d\n", table, updated, skipped)
}
func main() {
dsn := "host=66.116.207.225 port=5433 user=admin password=Package@123# dbname=nearledb sslmode=disable"
db, err := sql.Open("pgx", dsn)
if err != nil {
log.Fatalf("open error: %v", err)
}
defer db.Close()
if err := db.Ping(); err != nil {
log.Fatalf("ping error: %v", err)
}
fmt.Println("Connected to nearledb.")
client := &http.Client{Timeout: 10 * time.Second}
backfillTable(db, client, "tenants", "tenantid")
backfillTable(db, client, "tenantlocations", "locationid")
fmt.Println(strings.Repeat("-", 40))
fmt.Println("Done.")
}