feat: add flitsmeister utility for processing flitsmeister CSV files

config/ansible/tasks/global/utils/flitsmeister.go

@@ -0,0 +1,127 @@
+package main
+
+import (
+	"encoding/csv"
+	"fmt"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Usage: flitsmeister <filename.csv>")
+		return
+	}
+
+	file, err := os.Open(os.Args[1])
+	if err != nil {
+		panic(err)
+	}
+	defer file.Close()
+
+	reader := csv.NewReader(file)
+	reader.Comma = ','
+	records, err := reader.ReadAll()
+	if err != nil {
+		panic(err)
+	}
+
+	// Dutch to English month translation
+	dutchMonths := map[string]string{
+		"januari": "January", "februari": "February", "maart": "March",
+		"april": "April", "mei": "May", "juni": "June", "juli": "July",
+		"augustus": "August", "september": "September", "oktober": "October",
+		"november": "November", "december": "December",
+	}
+
+	monthlyTotals := make(map[string]float64)
+	monthlyCounts := make(map[string]int)
+	monthlyLongest := make(map[string]float64)
+	monthlyShortest := make(map[string]float64)
+
+	// Skip header row
+	for _, record := range records[1:] {
+		if len(record) < 8 {
+			continue
+		}
+
+		// Parse date with Dutch month names
+		dateParts := strings.Split(record[1], " ")
+		if len(dateParts) < 4 {
+			continue
+		}
+
+		// Translate Dutch month to English
+		dutchMonth := strings.ToLower(dateParts[1])
+		engMonth, ok := dutchMonths[dutchMonth]
+		if !ok {
+			fmt.Printf("Unknown month: %s\n", dutchMonth)
+			continue
+		}
+
+		// Rebuild date string with English month
+		dateStr := fmt.Sprintf("%s %s %s %s",
+			dateParts[0], engMonth, dateParts[2], dateParts[3])
+
+		// Parse date (single-digit days allowed)
+		tripDate, err := time.Parse("2 January 2006 15:04", dateStr)
+		if err != nil {
+			fmt.Printf("Error parsing date: %v\n", err)
+			continue
+		}
+
+		// Create month key (format: YYYY-MM)
+		monthKey := fmt.Sprintf("%d-%02d", tripDate.Year(), tripDate.Month())
+
+		// Parse distance
+		distance, err := strconv.ParseFloat(record[7], 64)
+		if err != nil {
+			fmt.Printf("Error parsing distance: %v\n", err)
+			continue
+		}
+
+		monthlyTotals[monthKey] += distance
+		monthlyCounts[monthKey]++
+
+		// Track longest and shortest trip
+		if _, exists := monthlyLongest[monthKey]; !exists {
+			monthlyLongest[monthKey] = distance
+			monthlyShortest[monthKey] = distance
+		} else {
+			if distance > monthlyLongest[monthKey] {
+				monthlyLongest[monthKey] = distance
+			}
+			if distance < monthlyShortest[monthKey] {
+				monthlyShortest[monthKey] = distance
+			}
+		}
+	}
+
+	// Sort months chronologically
+	var months []string
+	for k := range monthlyTotals {
+		months = append(months, k)
+	}
+	sort.Strings(months)
+
+	// Print table header
+	fmt.Printf("%-10s | %-12s | %-7s | %-12s | %-12s | %-12s\n", "Month", "Total KM", "Trips", "Avg KM/Trip", "Longest", "Shortest")
+	fmt.Println(strings.Repeat("-", 77))
+
+	// Print stats per month
+	for _, month := range months {
+		total := monthlyTotals[month]
+		trips := monthlyCounts[month]
+		avg := 0.0
+		if trips > 0 {
+			avg = total / float64(trips)
+		}
+		longest := monthlyLongest[month]
+		shortest := monthlyShortest[month]
+		fmt.Printf("%-10s | %-12.2f | %-7d | %-12.2f | %-12.2f | %-12.2f\n",
+			month, total, trips, avg, longest, shortest)
+	}
+}

config/home-manager/flake.lock

@@ -39,11 +39,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1747542820,
-        "narHash": "sha256-GaOZntlJ6gPPbbkTLjbd8BMWaDYafhuuYRNrxCGnPJw=",
+        "lastModified": 1747744144,
+        "narHash": "sha256-W7lqHp0qZiENCDwUZ5EX/lNhxjMdNapFnbErcbnP11Q=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "292fa7d4f6519c074f0a50394dbbe69859bb6043",
+        "rev": "2795c506fe8fb7b03c36ccb51f75b6df0ab2553f",
         "type": "github"
       },
       "original": {