zoom_cache.go RawHistoryFolder

1package cache
2
3import (
4	"context"
5
6	"github.com/bnema/dumber/internal/cache/generic"
7	"github.com/bnema/dumber/internal/db"
8)
9
10// ZoomDBOperations implements DatabaseOperations for zoom level cache.
11// Handles loading, persisting, and deleting zoom levels from the database.
12type ZoomDBOperations struct {
13	queries db.DatabaseQuerier
14}
15
16// NewZoomDBOperations creates a new ZoomDBOperations instance.
17func NewZoomDBOperations(queries db.DatabaseQuerier) *ZoomDBOperations {
18	return &ZoomDBOperations{
19		queries: queries,
20	}
21}
22
23// LoadAll loads all zoom levels from the database.
24// Returns a map of domain -> zoom factor.
25func (z *ZoomDBOperations) LoadAll(ctx context.Context) (map[string]float64, error) {
26	levels, err := z.queries.ListZoomLevels(ctx)
27	if err != nil {
28		return nil, err
29	}
30
31	result := make(map[string]float64, len(levels))
32	for _, level := range levels {
33		result[level.Domain] = level.ZoomFactor
34	}
35
36	return result, nil
37}
38
39// Persist saves a zoom level to the database.
40// Uses UPSERT (INSERT OR UPDATE) to handle both new and existing entries.
41func (z *ZoomDBOperations) Persist(ctx context.Context, domain string, zoomFactor float64) error {
42	return z.queries.SetZoomLevel(ctx, domain, zoomFactor)
43}
44
45// Delete removes a zoom level from the database.
46func (z *ZoomDBOperations) Delete(ctx context.Context, domain string) error {
47	return z.queries.DeleteZoomLevel(ctx, domain)
48}
49
50// ZoomCache is a specialized cache for zoom levels.
51// It wraps GenericCache with domain-specific helper methods.
52type ZoomCache struct {
53	*generic.GenericCache[string, float64]
54}
55
56// NewZoomCache creates a new zoom level cache.
57func NewZoomCache(queries db.DatabaseQuerier) *ZoomCache {
58	dbOps := NewZoomDBOperations(queries)
59	return &ZoomCache{
60		GenericCache: generic.NewGenericCache(dbOps),
61	}
62}