refactor: remove schedule caching and ISO week helpers

internal/anime/schedule.go

@@ -1,121 +0,0 @@
-package anime
-
-import (
-	"context"
-	"fmt"
-	"mal/integrations/animeschedule"
-	"sort"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/gin-gonic/gin"
-)
-
-type cachedWeekSchedule struct {
-	fetchedAt time.Time
-	value     animeschedule.WeekSchedule
-}
-
-func parseYearWeek(c *gin.Context) (int, int) {
-	year, _ := strconv.Atoi(c.Query("year"))
-	week, _ := strconv.Atoi(c.Query("week"))
-	if year <= 0 || week <= 0 {
-		now := time.Now()
-		y, w := now.ISOWeek()
-		if year <= 0 {
-			year = y
-		}
-		if week <= 0 {
-			week = w
-		}
-	}
-	return year, week
-}
-
-func scheduleTimezone(c *gin.Context) string {
-	timezone := strings.TrimSpace(c.Query("timezone"))
-	if timezone == "" {
-		return "UTC"
-	}
-	return timezone
-}
-
-func (h *AnimeHandler) getCachedAnimeScheduleWeek(ctx context.Context, year int, week int, timezone string) (animeschedule.WeekSchedule, error) {
-	cacheKey := fmt.Sprintf("%d-%02d-%s", year, week, timezone)
-	const ttl = 10 * time.Minute
-
-	h.scheduleCacheMu.Lock()
-	cached, ok := h.scheduleCache[cacheKey]
-	h.scheduleCacheMu.Unlock()
-
-	if ok && time.Since(cached.fetchedAt) < ttl {
-		return cached.value, nil
-	}
-
-	value, err := animeschedule.FetchWeek(ctx, nil, year, week, timezone)
-	if err != nil {
-		return animeschedule.WeekSchedule{}, err
-	}
-
-	h.scheduleCacheMu.Lock()
-	h.scheduleCache[cacheKey] = cachedWeekSchedule{fetchedAt: time.Now(), value: value}
-	h.scheduleCacheMu.Unlock()
-
-	return value, nil
-}
-
-type scheduleDayView struct {
-	DateLabel    string
-	WeekdayLabel string
-	Entries      []animeschedule.Entry
-}
-
-func buildScheduleDays(schedule animeschedule.WeekSchedule, year int, week int) []scheduleDayView {
-	start := isoWeekStartMonday(year, week)
-	order := []time.Weekday{time.Monday, time.Tuesday, time.Wednesday, time.Thursday, time.Friday, time.Saturday, time.Sunday}
-	out := make([]scheduleDayView, 0, 7)
-	for i, wd := range order {
-		date := start.AddDate(0, 0, i)
-		entries := schedule.Days[wd]
-		sort.SliceStable(entries, func(i, j int) bool {
-			if !entries[i].AirsAt.IsZero() && !entries[j].AirsAt.IsZero() {
-				return entries[i].AirsAt.Before(entries[j].AirsAt)
-			}
-			return localTimeMinutes(entries[i].LocalTime) < localTimeMinutes(entries[j].LocalTime)
-		})
-		out = append(out, scheduleDayView{
-			DateLabel:    strings.ToUpper(date.Format("02 Jan")),
-			WeekdayLabel: wd.String(),
-			Entries:      entries,
-		})
-	}
-	return out
-}
-
-func localTimeMinutes(localTime string) int {
-	for _, layout := range []string{"15:04", "03:04 PM"} {
-		t, err := time.Parse(layout, localTime)
-		if err == nil {
-			return t.Hour()*60 + t.Minute()
-		}
-	}
-	return 0
-}
-
-func isoWeekStartMonday(year int, week int) time.Time {
-	// ISO week 1 is the week with the year's first Thursday in it.
-	jan4 := time.Date(year, 1, 4, 12, 0, 0, 0, time.Local)
-	// Move back to Monday
-	offset := int(time.Monday - jan4.Weekday())
-	if offset > 0 {
-		offset -= 7
-	}
-	week1Monday := jan4.AddDate(0, 0, offset)
-	return week1Monday.AddDate(0, 0, (week-1)*7)
-}
-
-func adjacentISOWeek(year int, week int, deltaWeeks int) (int, int) {
-	target := isoWeekStartMonday(year, week).AddDate(0, 0, deltaWeeks*7)
-	return target.ISOWeek()
-}