extract: add availability parsing

integrations/playback/allanime/availability.go

@@ -0,0 +1,102 @@
+package allanime
+
+import (
+	"context"
+	"fmt"
+	"mal/internal/domain"
+	"strconv"
+	"strings"
+)
+
+type AvailableEpisodes struct {
+	Sub []string
+	Dub []string
+	Raw []string
+}
+
+func (c *AllAnimeProvider) GetEpisodeAvailability(ctx context.Context, animeID int, titleCandidates []string) (domain.EpisodeAvailability, error) {
+	showID, err := c.ResolveEpisodeProviderID(ctx, animeID, titleCandidates)
+	if err != nil {
+		return domain.EpisodeAvailability{}, err
+	}
+	return c.GetEpisodeAvailabilityByProviderID(ctx, showID)
+}
+
+func (c *AllAnimeProvider) GetEpisodeAvailabilityByProviderID(ctx context.Context, showID string) (domain.EpisodeAvailability, error) {
+	available, err := c.GetAvailableEpisodes(ctx, showID)
+	if err != nil {
+		return domain.EpisodeAvailability{}, err
+	}
+
+	sub := parseEpisodeNumbers(append(available.Sub, available.Raw...))
+	dub := parseEpisodeNumbers(available.Dub)
+	return domain.EpisodeAvailability{Sub: sub, Dub: dub}, nil
+}
+
+func (c *AllAnimeProvider) GetAvailableEpisodes(ctx context.Context, showID string) (AvailableEpisodes, error) {
+	graphqlQuery := `query($showId: String!) {
+		show(_id: $showId) {
+			availableEpisodesDetail
+			lastEpisodeInfo
+		}
+	}`
+
+	result, err := c.graphqlRequest(ctx, graphqlQuery, map[string]any{"showId": showID})
+	if err != nil {
+		return AvailableEpisodes{}, err
+	}
+
+	data, ok := result["data"].(map[string]any)
+	if !ok {
+		return AvailableEpisodes{}, fmt.Errorf("invalid response")
+	}
+
+	show, ok := data["show"].(map[string]any)
+	if !ok || show == nil {
+		return AvailableEpisodes{}, fmt.Errorf("show not found")
+	}
+
+	detail, ok := show["availableEpisodesDetail"].(map[string]any)
+	if !ok {
+		return AvailableEpisodes{}, fmt.Errorf("invalid detail")
+	}
+
+	return AvailableEpisodes{
+		Sub: stringSliceFromAny(detail["sub"]),
+		Dub: stringSliceFromAny(detail["dub"]),
+		Raw: stringSliceFromAny(detail["raw"]),
+	}, nil
+}
+
+func parseEpisodeNumbers(raw []string) []int {
+	seen := make(map[int]bool, len(raw))
+	out := make([]int, 0, len(raw))
+	for _, value := range raw {
+		n, err := strconv.Atoi(strings.TrimSpace(value))
+		if err != nil || n <= 0 || seen[n] {
+			continue
+		}
+		seen[n] = true
+		out = append(out, n)
+	}
+	return out
+}
+
+func stringSliceFromAny(value any) []string {
+	items, ok := value.([]any)
+	if !ok {
+		return nil
+	}
+
+	values := make([]string, 0, len(items))
+	for _, item := range items {
+		str, ok := item.(string)
+		if !ok {
+			continue
+		}
+
+		values = append(values, str)
+	}
+
+	return values
+}