package main

import (
	"strings"
	"time"
)

// getString extracts a string value from content map.
func getString(content map[string]any, key string) string {
	if v, ok := content[key].(string); ok {
		return v
	}
	return ""
}

// getBool extracts a bool value from content map (handles string forms).
func getBool(content map[string]any, key string, defaultVal bool) bool {
	if v, ok := content[key].(bool); ok {
		return v
	}
	if v, ok := content[key].(string); ok {
		switch strings.ToLower(v) {
		case "true", "yes", "1":
			return true
		case "false", "no", "0":
			return false
		}
	}
	return defaultVal
}

// getSlice extracts a slice of maps from content.
func getSlice(content map[string]any, key string) []map[string]any {
	if v, ok := content[key].([]any); ok {
		result := make([]map[string]any, 0, len(v))
		for _, item := range v {
			if m, ok := item.(map[string]any); ok {
				result = append(result, m)
			}
		}
		return result
	}
	return nil
}

// shortDayName returns the three-letter weekday abbreviation for "today" in
// the server's local time zone. Used by hours_strip to flag today's row
// server-side (no JS).
func shortDayName(now time.Time) string {
	switch now.Weekday() {
	case time.Monday:
		return "Mon"
	case time.Tuesday:
		return "Tue"
	case time.Wednesday:
		return "Wed"
	case time.Thursday:
		return "Thu"
	case time.Friday:
		return "Fri"
	case time.Saturday:
		return "Sat"
	case time.Sunday:
		return "Sun"
	}
	return ""
}

// normaliseDay accepts a free-form day string and returns the matching short
// name. This lets editors enter "Monday", "mon", or "Mon" and still get a
// reliable comparison against today.
func normaliseDay(day string) string {
	d := strings.ToLower(strings.TrimSpace(day))
	switch {
	case strings.HasPrefix(d, "mon"):
		return "Mon"
	case strings.HasPrefix(d, "tue"):
		return "Tue"
	case strings.HasPrefix(d, "wed"):
		return "Wed"
	case strings.HasPrefix(d, "thu"):
		return "Thu"
	case strings.HasPrefix(d, "fri"):
		return "Fri"
	case strings.HasPrefix(d, "sat"):
		return "Sat"
	case strings.HasPrefix(d, "sun"):
		return "Sun"
	}
	return strings.TrimSpace(day)
}