Add persons tab

database/persons.go

@@ -0,0 +1,67 @@
+package database
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"log"
+	"trikotwaschliste/models"
+)
+
+func DbPersons(pool *pgxpool.Pool) gin.H {
+	var items []models.PersonListItem
+	var persons []models.Person
+
+	// Get items
+	witems, err := pool.Query(context.Background(), "SELECT pe.name, count(pe.name)\nFROM washlist wa\nINNER JOIN persons pe ON wa.washed = pe.id\nGROUP BY pe.name\nORDER BY pe.name ASC")
+	if err != nil {
+		log.Println(err.Error())
+	}
+
+	var item models.PersonListItem
+	for witems.Next() {
+		err = witems.Scan(&item.Name, &item.Count)
+		if err != nil {
+			log.Println("Items: " + err.Error())
+		}
+		items = append(items, item)
+	}
+
+
+	// Get full persons list
+	wpersons, err := pool.Query(context.Background(), "SELECT id, name FROM persons ORDER BY name ASC")
+	if err != nil {
+		log.Println(err.Error())
+	}
+
+	var person models.Person
+	for wpersons.Next() {
+		err = wpersons.Scan(&person.Id, &person.Name)
+		if err != nil {
+			log.Println("Persons: " + err.Error())
+		}
+		persons = append(persons, person)
+	}
+
+	// Merge the list in n^2
+	var merge []models.PersonListItem
+	merge = append(merge, items...)
+	for _, p := range persons {
+		found := false
+		for _, it := range items {
+			if p.Name == it.Name {
+				found = true
+				break
+			}
+		}
+		if !found {
+			merge = append(merge, models.PersonListItem{
+				Name:  p.Name,
+				Count: 0,
+			})
+		}
+	}
+
+	return gin.H{"items": merge}
+}
+