updates on the api endpoints on the customer page and more

scratch/check_bookingno.go

@@ -0,0 +1,71 @@
+//go:build ignore
+
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"doormile/config"
+	"doormile/db"
+
+	"github.com/joho/godotenv"
+)
+
+func main() {
+	_ = godotenv.Load()
+	cfg := config.Load()
+	db.Connect(cfg)
+	if db.DB == nil {
+		log.Fatal("no DB")
+	}
+
+	fmt.Println("=== unique constraints on bookingno / trackingno ===")
+	type c struct{ Conname, Def string }
+	var cs []c
+	db.DB.Raw(`SELECT c.conname, pg_get_constraintdef(c.oid) def
+	  FROM pg_constraint c JOIN pg_class t ON t.oid=c.conrelid
+	  WHERE t.relname IN ('pickupbookings','consignments') AND c.contype='u'`).Scan(&cs)
+	if len(cs) == 0 {
+		fmt.Println("  NONE — nothing stops a duplicate at the database level")
+	}
+	for _, x := range cs {
+		fmt.Printf("  %s: %s\n", x.Conname, x.Def)
+	}
+
+	fmt.Println("\n=== duplicate booking numbers ===")
+	type d struct {
+		Bookingno string
+		N         int64
+	}
+	var ds []d
+	db.DB.Raw(`SELECT bookingno, count(*) n FROM pickupbookings
+	  GROUP BY 1 HAVING count(*)>1 ORDER BY n DESC LIMIT 10`).Scan(&ds)
+	fmt.Printf("  %d duplicated\n", len(ds))
+	for _, x := range ds {
+		fmt.Printf("    %s x%d\n", x.Bookingno, x.N)
+	}
+
+	fmt.Println("\n=== all-zero random part (would mean rand.Read failed) ===")
+	var zeros int64
+	db.DB.Raw(`SELECT count(*) FROM pickupbookings WHERE bookingno LIKE 'DM-BK-00000000-%'`).Scan(&zeros)
+	fmt.Printf("  %d\n", zeros)
+
+	fmt.Println("\n=== how many bookings share a timestamp suffix ===")
+	type s struct {
+		Suffix string
+		N      int64
+	}
+	var ss []s
+	db.DB.Raw(`SELECT split_part(bookingno,'-',4) suffix, count(*) n
+	  FROM pickupbookings GROUP BY 1 ORDER BY n DESC LIMIT 5`).Scan(&ss)
+	for _, x := range ss {
+		fmt.Printf("  suffix %-8s %d bookings\n", x.Suffix, x.N)
+	}
+
+	fmt.Println("\n=== duplicate tracking numbers ===")
+	var td []d
+	db.DB.Raw(`SELECT trackingno bookingno, count(*) n FROM consignments
+	  GROUP BY 1 HAVING count(*)>1 LIMIT 5`).Scan(&td)
+	fmt.Printf("  %d duplicated\n", len(td))
+}