Add filter facets, new-to-Helios flag, and original-style student cards

tools/columns/main.go

@@ -0,0 +1,50 @@
+// Command columns prints the column names of each directory table in the configured source.
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"sort"
+
+	"heliosian/internal/data"
+)
+
+func main() {
+	sheetID := os.Getenv("DIRECTORY_SHEET")
+	var source data.Source
+	if sheetID == "" {
+		source = data.Dir{Root: "sampledata"}
+	} else {
+		s, err := data.NewSheet(map[string]string{"directory": sheetID})
+		if err != nil {
+			log.Fatalf("[ERROR] load directory sheet: %v", err)
+		}
+		source = s
+	}
+	for _, name := range []string{"Basic Directory", "Staff Details", "Classrooms", "Schedules", "Grade Lookup", "Room Parents", "Departments"} {
+		rows, err := source.Table("directory", name)
+		if err != nil {
+			log.Fatalf("[ERROR] table %s: %v", name, err)
+		}
+		if len(rows) == 0 {
+			fmt.Printf("%s: no rows\n", name)
+			continue
+		}
+		seen := map[string]bool{}
+		columns := []string{}
+		for _, row := range rows {
+			for column := range row {
+				if !seen[column] {
+					seen[column] = true
+					columns = append(columns, column)
+				}
+			}
+		}
+		sort.Strings(columns)
+		fmt.Printf("%s:\n", name)
+		for _, column := range columns {
+			fmt.Printf("  %s\n", column)
+		}
+	}
+}