prepare_webui_theme.go RawHistoryFolder

1package usecase
2
3import (
4	"context"
5
6	"github.com/bnema/dumber/internal/application/port"
7	"github.com/bnema/dumber/internal/logging"
8)
9
10// PrepareWebUIThemeUseCase handles theme CSS injection for internal web pages.
11type PrepareWebUIThemeUseCase struct {
12	injector port.ContentInjector
13}
14
15// NewPrepareWebUIThemeUseCase creates a new theme preparation use case.
16func NewPrepareWebUIThemeUseCase(injector port.ContentInjector) *PrepareWebUIThemeUseCase {
17	return &PrepareWebUIThemeUseCase{
18		injector: injector,
19	}
20}
21
22// PrepareWebUIThemeInput contains parameters for theme preparation.
23type PrepareWebUIThemeInput struct {
24	// CSSVars is the CSS custom property declarations to inject.
25	// Should be generated from palette.ToWebCSSVars().
26	CSSVars string
27}
28
29// Execute injects theme CSS variables into the web view.
30func (uc *PrepareWebUIThemeUseCase) Execute(ctx context.Context, input PrepareWebUIThemeInput) error {
31	log := logging.FromContext(ctx)
32	log.Debug().Msg("preparing WebUI theme CSS")
33
34	if uc.injector == nil {
35		log.Warn().Msg("content injector is nil, skipping theme injection")
36		return nil
37	}
38
39	if input.CSSVars == "" {
40		log.Debug().Msg("no CSS vars to inject")
41		return nil
42	}
43
44	if err := uc.injector.InjectThemeCSS(ctx, input.CSSVars); err != nil {
45		log.Error().Err(err).Msg("failed to inject theme CSS")
46		return err
47	}
48
49	log.Debug().Msg("theme CSS injected successfully")
50	return nil
51}