refactor: refactor project structure to use golang best practices

This commit is contained in:
Patryk Hegenberg 2026-01-11 11:33:26 +01:00
parent 5b16cef525
commit 4ed6a61b1d
10 changed files with 617 additions and 702 deletions

521
internal/store/export.go Normal file
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package store
import (
"context"
"fmt"
"log/slog"
"sort"
"strings"
"time"
"github.com/xuri/excelize/v2"
)
type DailySummary struct {
Date string
Day string
WorkStart string
WorkEnd string
BreakDuration time.Duration
WorkDuration time.Duration
Tag string
}
type ExcelEntry struct {
Date string
Day string
WorkStart string
WorkEnd string
BreakDuration string
Tag string
}
func (s *Store) ExportSummary(ctx context.Context, filename string) error {
slog.Info(fmt.Sprintf("Starting export to '%s'...", filename))
currentYear := time.Now().Year()
location := time.Local
yearStart := time.Date(currentYear, 1, 1, 0, 0, 0, 0, location)
yearEnd := yearStart.AddDate(1, 0, 0)
slog.Info(fmt.Sprintf("Exporting data for year %d (%s to %s)", currentYear, yearStart.Format("2006-01-02"), yearEnd.Format("2006-01-02")))
query := `
SELECT id, tag, start_time, end_time
FROM time_entries
WHERE start_time < ?
AND (end_time IS NULL OR end_time > ?)
ORDER BY start_time ASC;`
rows, err := s.db.QueryContext(ctx, query, yearEnd, yearStart)
if err != nil {
return fmt.Errorf("failed to query entries for year export: %w", err)
}
defer rows.Close()
var entries []TimeEntry
for rows.Next() {
var entry TimeEntry
if err := rows.Scan(&entry.ID, &entry.Tag, &entry.StartTime, &entry.EndTime); err != nil {
return fmt.Errorf("failed to scan entry row: %w", err)
}
entries = append(entries, entry)
}
if err = rows.Err(); err != nil {
return fmt.Errorf("error during export row iteration: %w", err)
}
slog.Info(fmt.Sprintf("Found %d potentially relevant time entries.", len(entries)))
dailySummaries, err := aggregateEntriesToDailySummaries(entries, yearStart, yearEnd)
if err != nil {
return fmt.Errorf("failed to aggregate entries for export: %w", err)
}
excelEntries := convertDailyToExcelEntries(dailySummaries)
if len(excelEntries) == 0 {
slog.Warn("No daily summaries generated for the export period.")
fmt.Println("No data available to generate the export for the specified period.")
return nil
}
if err := writeExcelSheet(excelEntries, filename); err != nil {
return fmt.Errorf("failed to write excel sheet '%s': %w", filename, err)
}
slog.Info(fmt.Sprintf("Successfully exported timetable to %s", filename))
fmt.Printf("Successfully exported timetable to %s\n", filename)
return nil
}
func aggregateEntriesToDailySummaries(entries []TimeEntry, yearStart, yearEnd time.Time) (map[string]*DailySummary, error) {
dailyMap := make(map[string]*DailySummary)
location := yearStart.Location()
now := time.Now().In(location)
currentDay := yearStart
for currentDay.Before(yearEnd) {
dayStr := currentDay.Format("2006-01-02")
weekday := currentDay.Weekday()
tag := ""
if weekday == time.Saturday || weekday == time.Sunday {
tag = "free"
}
dailyMap[dayStr] = &DailySummary{
Date: dayStr,
Day: weekday.String()[:3],
Tag: tag,
}
currentDay = currentDay.Add(24 * time.Hour)
}
fullDayTags := make(map[string]string)
for _, entry := range entries {
if entry.StartTime.IsZero() {
slog.Warn("Skipping entry with zero start time", "ID", entry.ID)
continue
}
startTime := entry.StartTime.In(location)
endTime := entry.EndTime.Time.In(location)
if !entry.EndTime.Valid {
endTime = now
}
if endTime.Before(yearStart) || startTime.After(yearEnd) {
continue
}
lowerTag := strings.ToLower(entry.Tag)
isPotentiallyFullDaySpecialTag := false
switch lowerTag {
case "urlaub", "krank", "feiertag", "uni", "free":
isPotentiallyFullDaySpecialTag = true
}
if isPotentiallyFullDaySpecialTag {
loopTimeForTag := startTime
for loopTimeForTag.Before(endTime) || loopTimeForTag.Equal(endTime) {
dayStr := loopTimeForTag.Format("2006-01-02")
if _, exists := dailyMap[dayStr]; exists {
existingTag := fullDayTags[dayStr]
if shouldOverwriteTag(existingTag, lowerTag) {
fullDayTags[dayStr] = lowerTag
}
}
loopTimeForTag = time.Date(loopTimeForTag.Year(), loopTimeForTag.Month(), loopTimeForTag.Day(), 0, 0, 0, 0, location).Add(24 * time.Hour)
}
}
loopTime := startTime
for loopTime.Before(endTime) {
dayStr := loopTime.Format("2006-01-02")
dayStart := time.Date(loopTime.Year(), loopTime.Month(), loopTime.Day(), 0, 0, 0, 0, location)
dayEnd := dayStart.Add(24 * time.Hour)
summary, exists := dailyMap[dayStr]
if !exists {
loopTime = dayEnd
continue
}
segmentStart := loopTime
segmentEnd := endTime
if segmentEnd.After(dayEnd) {
segmentEnd = dayEnd
}
segmentDuration := segmentEnd.Sub(segmentStart)
if segmentDuration <= 0 {
loopTime = dayEnd
continue
}
timeStr := segmentStart.Format("15:04:05")
switch lowerTag {
case TagWork:
summary.WorkDuration += segmentDuration
if summary.WorkStart == "" || timeStr < summary.WorkStart {
summary.WorkStart = timeStr
}
entryEndTimeOnThisDay := endTime
if !endTime.Truncate(24 * time.Hour).Equal(dayStart) {
entryEndTimeOnThisDay = segmentEnd
}
entryEndTimeOnThisDayStr := entryEndTimeOnThisDay.Format("15:04:05")
if summary.WorkEnd == "" || entryEndTimeOnThisDayStr > summary.WorkEnd {
summary.WorkEnd = entryEndTimeOnThisDayStr
}
if summary.Tag == "" || summary.Tag == "free" {
summary.Tag = TagWork
}
case TagBreak:
summary.BreakDuration += segmentDuration
default:
summary.WorkDuration += segmentDuration
if summary.WorkStart == "" || timeStr < summary.WorkStart {
summary.WorkStart = timeStr
}
entryEndTimeOnThisDay := endTime
if !endTime.Truncate(24 * time.Hour).Equal(dayStart) {
entryEndTimeOnThisDay = segmentEnd
}
entryEndTimeOnThisDayStr := entryEndTimeOnThisDay.Format("15:04:05")
if summary.WorkEnd == "" || entryEndTimeOnThisDayStr > summary.WorkEnd {
summary.WorkEnd = entryEndTimeOnThisDayStr
}
if summary.Tag == "" || summary.Tag == "free" {
summary.Tag = TagWork
}
}
loopTime = dayEnd
}
}
for dayStr, specialTag := range fullDayTags {
if summary, exists := dailyMap[dayStr]; exists {
if shouldOverwriteTag(summary.Tag, specialTag) {
summary.Tag = specialTag
summary.WorkStart = ""
summary.WorkEnd = ""
summary.WorkDuration = 0
summary.BreakDuration = 0
}
}
}
return dailyMap, nil
}
func shouldOverwriteTag(existingTag, newTag string) bool {
if newTag != "" && (existingTag == "" || strings.ToLower(existingTag) == "free") {
return true
}
if newTag == "" {
return false
}
priority := map[string]int{
"krank": 1,
"feiertag": 1,
"urlaub": 1,
"uni": 2,
"work": 3,
"break": 99,
"free": 100,
}
prioExisting, okExisting := priority[strings.ToLower(existingTag)]
if !okExisting {
prioExisting = 999
}
prioNew, okNew := priority[strings.ToLower(newTag)]
if !okNew {
prioNew = 999
}
return prioNew < prioExisting || (prioNew == prioExisting && strings.ToLower(newTag) != "work")
}
func convertDailyToExcelEntries(dailySummaries map[string]*DailySummary) []ExcelEntry {
excelEntries := make([]ExcelEntry, 0, len(dailySummaries))
dates := make([]string, 0, len(dailySummaries))
for d := range dailySummaries {
dates = append(dates, d)
}
sort.Strings(dates)
for _, dateStr := range dates {
summary := dailySummaries[dateStr]
entry := ExcelEntry{
Date: summary.Date,
Day: summary.Day,
WorkStart: summary.WorkStart,
WorkEnd: summary.WorkEnd,
BreakDuration: formatDuration(summary.BreakDuration),
Tag: summary.Tag,
}
excelEntries = append(excelEntries, entry)
}
return excelEntries
}
func getSollExcelTime(dayOfWeek string) any {
var sollString string
switch dayOfWeek {
case "Mon", "Tue", "Thu", "Fri":
sollString = "08:00"
case "Wed":
sollString = "04:00"
default:
return nil
}
sollDur, err := time.Parse("15:04", sollString)
if err != nil {
slog.Error(fmt.Sprintf("Could not parse hardcoded soll string '%s': %v", sollString, err))
return nil
}
return float64(sollDur.Hour())/24.0 + float64(sollDur.Minute())/(24.0*60.0)
}
func writeExcelSheet(entries []ExcelEntry, name string) error {
f := excelize.NewFile()
defer func() {
if err := f.Close(); err != nil {
slog.Error("Failed to close excel file handle", "error", err)
}
}()
sheetName := "Zeiten"
if len(entries) > 0 {
if t, err := time.Parse("2006-01-02", entries[0].Date); err == nil {
sheetName = fmt.Sprintf("%d", t.Year())
}
}
index, err := f.NewSheet(sheetName)
if err != nil {
existingIndex, _ := f.GetSheetIndex(sheetName)
if existingIndex == -1 {
sheetName = "Sheet1"
index, _ = f.GetSheetIndex(sheetName)
if index == -1 {
return fmt.Errorf("could not create sheet '%s': %w", sheetName, err)
}
} else {
index = existingIndex
}
}
defaultSheetName := "Sheet1"
defaultSheetIndex, _ := f.GetSheetIndex(defaultSheetName)
if sheetName != defaultSheetName && defaultSheetIndex != -1 {
f.DeleteSheet(defaultSheetName)
}
f.SetCellValue(sheetName, "B1", "Arbeitszeiten "+sheetName)
f.MergeCell(sheetName, "B1", "O1")
f.SetCellValue(sheetName, "B3", "Datum")
f.SetCellValue(sheetName, "C3", "Tag")
f.SetCellValue(sheetName, "D3", "Status / Zeit")
f.MergeCell(sheetName, "D3", "E3")
f.SetCellValue(sheetName, "G3", "Dauer")
f.MergeCell(sheetName, "G3", "H3")
f.SetCellValue(sheetName, "I3", "Pause")
f.SetCellValue(sheetName, "J3", "Netto")
f.SetCellValue(sheetName, "K3", "Soll")
f.SetCellValue(sheetName, "L3", "Saldo")
f.SetCellValue(sheetName, "N3", "Saldo Kumuliert")
f.MergeCell(sheetName, "N3", "O3")
f.SetCellValue(sheetName, "D4", "von / Status")
f.SetCellValue(sheetName, "E4", "bis")
f.SetCellValue(sheetName, "G4", "brutto")
f.SetCellValue(sheetName, "H4", "")
f.SetCellValue(sheetName, "J4", "Ist (Netto)")
f.SetCellValue(sheetName, "K4", "")
f.SetCellValue(sheetName, "L4", "Tag")
f.SetCellValue(sheetName, "N4", "Total")
f.SetCellValue(sheetName, "O4", "")
toExcelTime := func(t time.Time) float64 {
return float64(t.Hour())/24.0 + float64(t.Minute())/(24.0*60.0) + float64(t.Second())/(24.0*60.0*60.0)
}
timeStyleCode := "hh:mm"
timeStyle, _ := f.NewStyle(&excelize.Style{CustomNumFmt: &timeStyleCode})
dateStyleCode := "dd.mm.yyyy"
dateStyle, _ := f.NewStyle(&excelize.Style{CustomNumFmt: &dateStyleCode})
saldoStyleCode := "[h]:mm;[RED]-[h]:mm"
saldoStyle, _ := f.NewStyle(&excelize.Style{CustomNumFmt: &saldoStyleCode})
headerStyle, _ := f.NewStyle(&excelize.Style{
Font: &excelize.Font{Bold: true},
Alignment: &excelize.Alignment{Horizontal: "center"},
})
centerStyle, _ := f.NewStyle(&excelize.Style{Alignment: &excelize.Alignment{Horizontal: "center"}})
f.SetCellStyle(sheetName, "B3", "O4", headerStyle)
f.SetCellStyle(sheetName, "B1", "O1", headerStyle)
startRow := 6
for i, entry := range entries {
row := startRow + i
rowStr := fmt.Sprintf("%d", row)
tagLower := strings.ToLower(entry.Tag)
dateValue, err := time.Parse("2006-01-02", entry.Date)
if err == nil {
f.SetCellValue(sheetName, "B"+rowStr, dateValue)
f.SetCellStyle(sheetName, "B"+rowStr, "B"+rowStr, dateStyle)
} else {
f.SetCellValue(sheetName, "B"+rowStr, entry.Date)
}
f.SetCellValue(sheetName, "C"+rowStr, entry.Day)
sollExcelTime := getSollExcelTime(entry.Day)
if sollExcelTime != nil {
f.SetCellValue(sheetName, "K"+rowStr, sollExcelTime)
f.SetCellStyle(sheetName, "K"+rowStr, "K"+rowStr, timeStyle)
} else {
f.SetCellValue(sheetName, "K"+rowStr, "")
}
switch tagLower {
case TagWork, "":
if entry.WorkStart != "" && entry.WorkEnd != "" {
startTime, _ := time.Parse("15:04:05", entry.WorkStart)
endTime, _ := time.Parse("15:04:05", entry.WorkEnd)
startExcelTime := toExcelTime(startTime)
endExcelTime := toExcelTime(endTime)
if endExcelTime < startExcelTime {
endExcelTime += 1.0
}
f.SetCellValue(sheetName, "D"+rowStr, startExcelTime)
f.SetCellStyle(sheetName, "D"+rowStr, "D"+rowStr, timeStyle)
f.SetCellValue(sheetName, "E"+rowStr, endExcelTime)
f.SetCellStyle(sheetName, "E"+rowStr, "E"+rowStr, timeStyle)
f.SetCellFormula(sheetName, "G"+rowStr, fmt.Sprintf("E%d-D%d", row, row))
f.SetCellStyle(sheetName, "G"+rowStr, "H"+rowStr, saldoStyle)
breakDur, _ := time.Parse("15:04:05", entry.BreakDuration)
breakExcelTime := toExcelTime(breakDur)
thirtyMinBreak := float64(30) / (24 * 60)
if breakExcelTime < thirtyMinBreak {
breakExcelTime = thirtyMinBreak
}
f.SetCellValue(sheetName, "I"+rowStr, breakExcelTime)
f.SetCellStyle(sheetName, "I"+rowStr, "I"+rowStr, timeStyle)
f.SetCellFormula(sheetName, "J"+rowStr, fmt.Sprintf("MAX(0, G%d-I%d)", row, row))
f.SetCellStyle(sheetName, "J"+rowStr, "J"+rowStr, saldoStyle)
} else {
f.SetCellValue(sheetName, "J"+rowStr, 0.0)
f.SetCellStyle(sheetName, "J"+rowStr, "J"+rowStr, saldoStyle)
}
case "urlaub", "uni":
text := ""
if tagLower == "urlaub" {
text = "Urlaub"
} else {
text = "Hochschule"
}
f.SetCellValue(sheetName, "D"+rowStr, text)
f.MergeCell(sheetName, "D"+rowStr, "I"+rowStr)
f.SetCellStyle(sheetName, "D"+rowStr, "I"+rowStr, centerStyle)
if sollExcelTime != nil {
f.SetCellValue(sheetName, "J"+rowStr, sollExcelTime)
} else {
f.SetCellValue(sheetName, "J"+rowStr, 0.0)
}
f.SetCellStyle(sheetName, "J"+rowStr, "J"+rowStr, saldoStyle)
case "feiertag", "krank":
text := ""
if tagLower == "feiertag" {
text = "Feiertag"
} else {
text = "Krank"
}
f.SetCellValue(sheetName, "D"+rowStr, text)
f.MergeCell(sheetName, "D"+rowStr, "I"+rowStr)
f.SetCellStyle(sheetName, "D"+rowStr, "I"+rowStr, centerStyle)
if sollExcelTime != nil {
f.SetCellValue(sheetName, "J"+rowStr, sollExcelTime)
} else {
f.SetCellValue(sheetName, "J"+rowStr, 0.0)
}
f.SetCellStyle(sheetName, "J"+rowStr, "J"+rowStr, saldoStyle)
case "free":
f.SetCellValue(sheetName, "D"+rowStr, "")
f.MergeCell(sheetName, "D"+rowStr, "I"+rowStr)
f.SetCellStyle(sheetName, "D"+rowStr, "I"+rowStr, centerStyle)
f.SetCellValue(sheetName, "J"+rowStr, 0.0)
f.SetCellStyle(sheetName, "J"+rowStr, "J"+rowStr, saldoStyle)
default:
f.SetCellValue(sheetName, "J"+rowStr, 0.0)
f.SetCellStyle(sheetName, "J"+rowStr, "J"+rowStr, saldoStyle)
}
f.SetCellFormula(sheetName, "L"+rowStr, fmt.Sprintf("J%d-K%d", row, row))
f.SetCellStyle(sheetName, "L"+rowStr, "M"+rowStr, saldoStyle)
if i == 0 {
f.SetCellFormula(sheetName, "N"+rowStr, fmt.Sprintf("L%d", row))
} else {
prevSaldoTotalCell := fmt.Sprintf("N%d", row-1)
f.SetCellFormula(sheetName, "N"+rowStr, fmt.Sprintf("%s+L%d", prevSaldoTotalCell, row))
}
f.SetCellStyle(sheetName, "N"+rowStr, "O"+rowStr, saldoStyle)
}
f.SetColWidth(sheetName, "B", "B", 12)
f.SetColWidth(sheetName, "C", "C", 5)
f.SetColWidth(sheetName, "D", "E", 10)
f.SetColWidth(sheetName, "F", "F", 2)
f.SetColWidth(sheetName, "G", "H", 9)
f.SetColWidth(sheetName, "I", "I", 9)
f.SetColWidth(sheetName, "J", "J", 9)
f.SetColWidth(sheetName, "K", "K", 9)
f.SetColWidth(sheetName, "L", "M", 9)
f.SetColWidth(sheetName, "N", "O", 10)
f.SetActiveSheet(index)
if err := f.SaveAs(name); err != nil {
return fmt.Errorf("failed to save excel file as '%s': %w", name, err)
}
return nil
}

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internal/store/store.go Normal file
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package store
import (
"context"
"database/sql"
"fmt"
"log/slog"
"os"
"path/filepath"
"strings"
"time"
"golang.org/x/text/cases"
"golang.org/x/text/language"
_ "modernc.org/sqlite"
)
const (
TagWork = "work"
TagBreak = "break"
)
type TimeEntry struct {
ID int64
Tag string
StartTime time.Time
EndTime sql.NullTime
}
type Store struct {
db *sql.DB
dbPath string
}
func NewStore() (*Store, error) {
dbPath, err := ensureDatabasePath()
if err != nil {
return nil, fmt.Errorf("could not determine database path: %w", err)
}
slog.Debug("Using database at:", "path", dbPath)
db, err := sql.Open("sqlite", fmt.Sprintf("%s?_pragma=journal_mode(WAL)", dbPath))
if err != nil {
return nil, fmt.Errorf("failed to open database '%s': %w", dbPath, err)
}
if err = db.Ping(); err != nil {
db.Close()
return nil, fmt.Errorf("failed to connect to database '%s': %w", dbPath, err)
}
if err := migrate(db); err != nil {
db.Close()
return nil, fmt.Errorf("migration failed: %w", err)
}
return &Store{db: db, dbPath: dbPath}, nil
}
func migrate(db *sql.DB) error {
createTableSQL := `
CREATE TABLE IF NOT EXISTS time_entries (
id INTEGER PRIMARY KEY AUTOINCREMENT,
tag TEXT NOT NULL CHECK(tag <> ''),
start_time DATETIME NOT NULL,
end_time DATETIME NULL,
CHECK (end_time IS NULL OR end_time >= start_time)
);`
if _, err := db.Exec(createTableSQL); err != nil {
return fmt.Errorf("failed to create table 'time_entries': %w", err)
}
createIndexSQL := `CREATE INDEX IF NOT EXISTS idx_time_entries_start_time ON time_entries (start_time);`
if _, err := db.Exec(createIndexSQL); err != nil {
slog.Warn("Failed to create index on start_time:", "error", err)
}
return nil
}
func ensureDatabasePath() (string, error) {
configDir, err := os.UserConfigDir()
if err != nil {
return "", fmt.Errorf("could not get user config dir: %w", err)
}
workConfigDir := filepath.Join(configDir, "work")
if err := os.MkdirAll(workConfigDir, 0o750); err != nil {
return "", fmt.Errorf("failed to create config directory '%s': %w", workConfigDir, err)
}
return filepath.Join(workConfigDir, "worktime.sqlite"), nil
}
func (s *Store) Close() error {
if s.db != nil {
slog.Debug("Closing database connection", "path", s.dbPath)
return s.db.Close()
}
return nil
}
func (s *Store) stopCurrentEntry(ctx context.Context, now time.Time) (bool, error) {
query := `UPDATE time_entries SET end_time = ? WHERE end_time IS NULL;`
result, err := s.db.ExecContext(ctx, query, now)
if err != nil {
return false, fmt.Errorf("failed to execute stop current entry query: %w", err)
}
rowsAffected, err := result.RowsAffected()
if err != nil {
return false, fmt.Errorf("failed to get affected rows: %w", err)
}
return rowsAffected > 0, nil
}
func (s *Store) StartTracking(ctx context.Context, tag string) error {
if tag == "" {
return fmt.Errorf("cannot start tracking with an empty tag")
}
now := time.Now()
stopped, err := s.stopCurrentEntry(ctx, now)
if err != nil {
return err
}
if stopped {
slog.Info("Stopped previous time entry.")
}
query := `INSERT INTO time_entries (tag, start_time, end_time) VALUES (?, ?, NULL);`
_, err = s.db.ExecContext(ctx, query, tag, now)
if err != nil {
return fmt.Errorf("failed to start tracking tag '%s': %w", tag, err)
}
slog.Info(fmt.Sprintf("Started tracking: %s", tag))
return nil
}
func (s *Store) StopTracking(ctx context.Context) error {
now := time.Now()
stopped, err := s.stopCurrentEntry(ctx, now)
if err != nil {
return err
}
if stopped {
slog.Info(fmt.Sprintf("Stopped tracking at %s", now.Format(time.RFC3339)))
} else {
slog.Info("No active time entry found to stop.")
}
return nil
}
func (s *Store) LogFullDay(ctx context.Context, tag string, date time.Time) error {
if tag == "" {
return fmt.Errorf("cannot log full day with an empty tag")
}
tag = strings.ToLower(tag)
location := date.Location()
dayStart := time.Date(date.Year(), date.Month(), date.Day(), 0, 0, 0, 0, location)
dayEnd := dayStart.Add(24 * time.Hour)
_, err := s.stopCurrentEntry(ctx, dayStart)
if err != nil {
slog.Warn("Failed to stop current entry before logging full day", "error", err)
}
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer tx.Rollback()
query := `INSERT INTO time_entries (tag, start_time, end_time) VALUES (?, ?, ?);`
if _, err := tx.ExecContext(ctx, query, tag, dayStart, dayEnd); err != nil {
return fmt.Errorf("failed to insert full-day entry: %w", err)
}
if err := tx.Commit(); err != nil {
return fmt.Errorf("failed to commit transaction: %w", err)
}
titleCaser := cases.Title(language.English)
slog.Info(fmt.Sprintf("Successfully logged full day entry: Tag='%s', Date='%s'", tag, dayStart.Format("2006-01-02")))
fmt.Printf("Successfully logged '%s' for %s.\n", titleCaser.String(tag), dayStart.Format("2006-01-02"))
return nil
}
func (s *Store) GetEntriesInRange(ctx context.Context, start, end time.Time) ([]TimeEntry, error) {
if start.IsZero() || end.IsZero() || end.Before(start) {
return nil, fmt.Errorf("invalid time range: start=%v, end=%v", start, end)
}
query := `
SELECT id, tag, start_time, end_time
FROM time_entries
WHERE start_time >= ? AND start_time < ?
ORDER BY start_time ASC;`
rows, err := s.db.QueryContext(ctx, query, start, end)
if err != nil {
return nil, fmt.Errorf("failed to query entries in range [%v, %v): %w", start, end, err)
}
defer rows.Close()
var entries []TimeEntry
for rows.Next() {
var entry TimeEntry
if err := rows.Scan(&entry.ID, &entry.Tag, &entry.StartTime, &entry.EndTime); err != nil {
return nil, fmt.Errorf("failed to scan entry row: %w", err)
}
entries = append(entries, entry)
}
if err = rows.Err(); err != nil {
return nil, fmt.Errorf("error during row iteration: %w", err)
}
return entries, nil
}
func (s *Store) CalculateSummary(ctx context.Context, period string) (map[string]time.Duration, error) {
start, end := GetTimeRangeFromPeriod(period)
if start.IsZero() {
return nil, fmt.Errorf("invalid period string: '%s'", period)
}
query := `
SELECT id, tag, start_time, end_time
FROM time_entries
WHERE (end_time IS NULL OR end_time > ?)
AND start_time < ?
ORDER BY start_time ASC;`
rows, err := s.db.QueryContext(ctx, query, start, end)
if err != nil {
return nil, fmt.Errorf("failed to query entries: %w", err)
}
defer rows.Close()
summary := make(map[string]time.Duration)
now := time.Now()
for rows.Next() {
var entry TimeEntry
if err := rows.Scan(&entry.ID, &entry.Tag, &entry.StartTime, &entry.EndTime); err != nil {
return nil, fmt.Errorf("failed to scan entry: %w", err)
}
effStart := entry.StartTime
if effStart.Before(start) {
effStart = start
}
effEnd := now
if entry.EndTime.Valid {
effEnd = entry.EndTime.Time
}
if effEnd.After(end) {
effEnd = end
}
if effEnd.After(effStart) {
summary[entry.Tag] += effEnd.Sub(effStart)
}
}
return summary, rows.Err()
}
func (s *Store) ShowSummary(ctx context.Context, period string) error {
summary, err := s.CalculateSummary(ctx, period)
if err != nil {
return err
}
start, _ := GetTimeRangeFromPeriod(period)
titlePeriod := period
if !start.IsZero() {
_, end := GetTimeRangeFromPeriod(period)
if period == ":day" || period == "today" {
titlePeriod = fmt.Sprintf("Today (%s)", start.Format("2006-01-02"))
} else if period == ":week" {
titlePeriod = fmt.Sprintf("Week starting %s", start.Format("Mon, 2006-01-02"))
} else if period == ":month" {
titlePeriod = fmt.Sprintf("Month %s", start.Format("January 2006"))
} else if period == ":year" {
titlePeriod = fmt.Sprintf("Year %d", start.Year())
} else if _, err := time.Parse("2006-01-02", period); err == nil {
titlePeriod = fmt.Sprintf("Day %s", start.Format("2006-01-02"))
} else {
titlePeriod = fmt.Sprintf("Period '%s' (%s to %s)", period, start.Format("2006-01-02"), end.Format("2006-01-02"))
}
}
fmt.Printf("\nTime Summary for %s\n", titlePeriod)
if len(summary) == 0 {
fmt.Println(" No recorded time entries for this period.")
return nil
}
tags := make([]string, 0, len(summary))
for tag := range summary {
tags = append(tags, tag)
}
titleCaser := cases.Title(language.English)
totalDuration := time.Duration(0)
fmt.Println("------------------------------")
for _, tag := range tags {
duration := summary[tag]
fmt.Printf(" %-12s: %s\n", titleCaser.String(tag), formatDuration(duration))
totalDuration += duration
}
fmt.Println("------------------------------")
fmt.Printf(" Total : %s\n\n", formatDuration(totalDuration))
return nil
}
func formatDuration(d time.Duration) string {
if d < 0 {
d = -d
sign := "-"
d = d.Round(time.Second)
h := int64(d.Hours())
m := int64(d.Minutes()) % 60
s := int64(d.Seconds()) % 60
return fmt.Sprintf("%s%02d:%02d:%02d", sign, h, m, s)
}
d = d.Round(time.Second)
h := int64(d.Hours())
m := int64(d.Minutes()) % 60
s := int64(d.Seconds()) % 60
return fmt.Sprintf("%02d:%02d:%02d", h, m, s)
}
func GetTimeRangeFromPeriod(period string) (time.Time, time.Time) {
now := time.Now()
year, month, day := now.Date()
loc := now.Location()
normalizedPeriod := strings.ToLower(strings.TrimPrefix(period, ":"))
switch normalizedPeriod {
case "week":
weekday := now.Weekday()
daysToMonday := time.Duration(weekday - time.Monday)
if weekday == time.Sunday {
daysToMonday = 6
}
start := time.Date(year, month, day, 0, 0, 0, 0, loc).Add(-daysToMonday * 24 * time.Hour)
end := start.Add(7 * 24 * time.Hour)
return start, end
case "month":
start := time.Date(year, month, 1, 0, 0, 0, 0, loc)
end := start.AddDate(0, 1, 0)
return start, end
case "year":
start := time.Date(year, 1, 1, 0, 0, 0, 0, loc)
end := start.AddDate(1, 0, 0)
return start, end
case "day", "today":
start := time.Date(year, month, day, 0, 0, 0, 0, loc)
end := start.AddDate(0, 0, 1)
return start, end
default:
if t, err := time.ParseInLocation("2006-01-02", period, loc); err == nil {
start := time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, loc)
end := start.AddDate(0, 0, 1)
return start, end
}
slog.Warn(fmt.Sprintf("Unrecognized period string '%s'. Cannot calculate time range.", period))
return time.Time{}, time.Time{}
}
}
func (s *Store) DB() *sql.DB {
return s.db
}