add and refine thunderball results page

helpers/distinctresults.go

@@ -0,0 +1,21 @@
+package helpers
+
+import "database/sql"
+
+func GetDistinctValues(db *sql.DB, column string) ([]string, error) {
+	query := "SELECT DISTINCT " + column + " FROM results_thunderball ORDER BY " + column
+	rows, err := db.Query(query)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var values []string
+	for rows.Next() {
+		var val string
+		if err := rows.Scan(&val); err == nil {
+			values = append(values, val)
+		}
+	}
+	return values, nil
+}

helpers/pagination.go

@@ -0,0 +1,18 @@
+package helpers
+
+import (
+	"database/sql"
+)
+
+func GetTotalPages(db *sql.DB, tableName, whereClause string, args []interface{}, pageSize int) (totalPages, totalCount int) {
+	query := "SELECT COUNT(*) FROM " + tableName + " " + whereClause
+	row := db.QueryRow(query, args...)
+	if err := row.Scan(&totalCount); err != nil {
+		return 1, 0
+	}
+	totalPages = (totalCount + pageSize - 1) / pageSize
+	if totalPages < 1 {
+		totalPages = 1
+	}
+	return totalPages, totalCount
+}

helpers/template.go

@@ -0,0 +1,25 @@
+package helpers
+
+import (
+	"html/template"
+)
+
+func TemplateFuncs() template.FuncMap {
+	return template.FuncMap{
+		"plus1": func(i int) int { return i + 1 },
+		"minus1": func(i int) int {
+			if i > 1 {
+				return i - 1
+			}
+			return 0
+		},
+		"mul": func(a, b int) int { return a * b },
+		"add": func(a, b int) int { return a + b },
+		"min": func(a, b int) int {
+			if a < b {
+				return a
+			}
+			return b
+		},
+	}
+}