package xiaozhi.modules.parent.catalog;

import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

public final class ParentCatalog {
    private ParentCatalog() {
    }

    public static final int SCHEDULED_SOFT_LIMIT = 100;
    public static final String DEFAULT_ORG_ID = "default_org";

    public static String resolveOrgId(String orgId) {
        if (orgId == null) {
            return DEFAULT_ORG_ID;
        }
        String value = orgId.trim();
        if (value.isEmpty() || !value.matches("[A-Za-z0-9_-]{1,64}")) {
            return DEFAULT_ORG_ID;
        }
        return value;
    }

    public static String courseId(String scene, String lessonId) {
        String lesson = (lessonId == null || lessonId.isBlank()) ? "l1.001" : lessonId.trim();
        String kind = "shadowing".equals(scene) ? "shd" : "rpt";
        String id = (lesson + "-" + kind).replaceAll("[^A-Za-z0-9_-]", "-");
        return id.length() < 32 ? id : id.substring(0, 31);
    }

    public static List<String> lessonRelativePaths(String scene, String lessonId) {
        return lessonRelativePaths(scene, lessonId, "en");
    }

    public static List<String> lessonRelativePaths(String scene, String lessonId, String language) {
        String lesson = (lessonId == null || lessonId.isBlank()) ? "l1.001" : lessonId.trim();
        return IdiomLessonCatalog.relativePaths(scene, lesson, language);
    }

    public static List<String> uniqueLessonPaths(List<String> files) {
        Set<String> seen = new LinkedHashSet<>();
        List<String> out = new ArrayList<>();
        if (files == null) {
            return out;
        }
        for (String raw : files) {
            if (raw == null) {
                continue;
            }
            String path = raw.replace('\\', '/').trim();
            if (path.isEmpty()) {
                continue;
            }
            if (!path.startsWith("/")) {
                path = "/" + path;
            }
            if (path.contains("..") || !path.startsWith("/english_learning/") || !path.toLowerCase().endsWith(".mp3")) {
                continue;
            }
            if (seen.add(path)) {
                out.add(path);
            }
        }
        return out;
    }

    public static Map<String, String> sceneToAppTask(String scene) {
        return ParentSceneCatalog.sceneToAppTask(scene);
    }

    public static List<Map<String, Object>> scenes() {
        return ParentSceneCatalog.scenes();
    }

    public static List<Map<String, Object>> lessons(String scene) {
        return IdiomLessonCatalog.lessons(scene);
    }

    public static List<Map<String, Object>> languagePairs() {
        return List.of(
                Map.of("id", "zh-en", "name", "中英", "ready", true),
                Map.of("id", "zh-fr", "name", "中法", "ready", false),
                Map.of("id", "zh-ja", "name", "中日", "ready", false));
    }

    public static String sceneName(String scene) {
        return ParentSceneCatalog.sceneName(scene);
    }

    public static String sceneIdFromAppTask(String appId, String taskId) {
        return ParentSceneCatalog.sceneIdFromAppTask(appId, taskId);
    }

    public static String kindFromAppTask(String appId, String taskId) {
        return ParentSceneCatalog.kindFromAppTask(appId, taskId);
    }
}