/**
 * TypeScript interfaces (copied from lib/models for type safety)
 */

export interface WorldElement {
    id: string;
    name: string;
    description: string;
}

export interface WorldProps {
    id: string;
    name: string;
    history: string;
    politics: string;
    economy: string;
    religion: string;
    languages: string;
    laws?: WorldElement[];
    biomes?: WorldElement[];
    issues?: WorldElement[];
    customs?: WorldElement[];
    kingdoms?: WorldElement[];
    climate?: WorldElement[];
    resources?: WorldElement[];
    wildlife?: WorldElement[];
    arts?: WorldElement[];
    ethnicGroups?: WorldElement[];
    socialClasses?: WorldElement[];
    importantCharacters?: WorldElement[];
}

/**
 * Database row types (snake_case from SQLite)
 */
export interface DBWorld {
    world_id: string;
    name: string;
    hashed_name: string;
    author_id: string;
    book_id: string;
    history?: string;
    politics?: string;
    economy?: string;
    religion?: string;
    languages?: string;
    meta_world: string;
    synced?: number;
}

export interface DBWorldElement {
    element_id: string;
    world_id: string;
    user_id: string;
    element_type: number; // Type identifier for different element categories
    name: string;
    original_name: string;
    description?: string;
    meta_element: string;
    synced?: number;
}

// Element type constants
export enum WorldElementType {
    LAW = 1,
    BIOME = 2,
    ISSUE = 3,
    CUSTOM = 4,
    KINGDOM = 5,
    CLIMATE = 6,
    RESOURCE = 7,
    WILDLIFE = 8,
    ART = 9,
    ETHNIC_GROUP = 10,
    SOCIAL_CLASS = 11,
    IMPORTANT_CHARACTER = 12
}

/**
 * MAPPERS: DB → TypeScript Interfaces
 */

export function dbToWorld(dbWorld: DBWorld, elements: DBWorldElement[] = []): WorldProps {
    // Group elements by type
    const laws: WorldElement[] = [];
    const biomes: WorldElement[] = [];
    const issues: WorldElement[] = [];
    const customs: WorldElement[] = [];
    const kingdoms: WorldElement[] = [];
    const climate: WorldElement[] = [];
    const resources: WorldElement[] = [];
    const wildlife: WorldElement[] = [];
    const arts: WorldElement[] = [];
    const ethnicGroups: WorldElement[] = [];
    const socialClasses: WorldElement[] = [];
    const importantCharacters: WorldElement[] = [];

    for (const elem of elements) {
        const worldElement: WorldElement = {
            id: elem.element_id,
            name: elem.name,
            description: elem.description || ''
        };

        switch (elem.element_type) {
            case WorldElementType.LAW:
                laws.push(worldElement);
                break;
            case WorldElementType.BIOME:
                biomes.push(worldElement);
                break;
            case WorldElementType.ISSUE:
                issues.push(worldElement);
                break;
            case WorldElementType.CUSTOM:
                customs.push(worldElement);
                break;
            case WorldElementType.KINGDOM:
                kingdoms.push(worldElement);
                break;
            case WorldElementType.CLIMATE:
                climate.push(worldElement);
                break;
            case WorldElementType.RESOURCE:
                resources.push(worldElement);
                break;
            case WorldElementType.WILDLIFE:
                wildlife.push(worldElement);
                break;
            case WorldElementType.ART:
                arts.push(worldElement);
                break;
            case WorldElementType.ETHNIC_GROUP:
                ethnicGroups.push(worldElement);
                break;
            case WorldElementType.SOCIAL_CLASS:
                socialClasses.push(worldElement);
                break;
            case WorldElementType.IMPORTANT_CHARACTER:
                importantCharacters.push(worldElement);
                break;
        }
    }

    return {
        id: dbWorld.world_id,
        name: dbWorld.name,
        history: dbWorld.history || '',
        politics: dbWorld.politics || '',
        economy: dbWorld.economy || '',
        religion: dbWorld.religion || '',
        languages: dbWorld.languages || '',
        laws,
        biomes,
        issues,
        customs,
        kingdoms,
        climate,
        resources,
        wildlife,
        arts,
        ethnicGroups,
        socialClasses,
        importantCharacters
    };
}

/**
 * MAPPERS: TypeScript Interfaces → DB
 */

export function worldToDb(world: WorldProps, authorId: string, bookId: string, synced: number = 0): DBWorld {
    return {
        world_id: world.id,
        name: world.name,
        hashed_name: '',
        author_id: authorId,
        book_id: bookId,
        history: world.history,
        politics: world.politics,
        economy: world.economy,
        religion: world.religion,
        languages: world.languages,
        meta_world: '',
        synced
    };
}

export function worldElementsToDb(world: WorldProps, userId: string, synced: number = 0): DBWorldElement[] {
    const elements: DBWorldElement[] = [];

    const addElements = (type: WorldElementType, elems: WorldElement[]) => {
        for (const elem of elems) {
            elements.push({
                element_id: elem.id,
                world_id: world.id,
                user_id: userId,
                element_type: type,
                name: elem.name,
                original_name: elem.name,
                description: elem.description,
                meta_element: '',
                synced
            });
        }
    };

    addElements(WorldElementType.LAW, world.laws || []);
    addElements(WorldElementType.BIOME, world.biomes || []);
    addElements(WorldElementType.ISSUE, world.issues || []);
    addElements(WorldElementType.CUSTOM, world.customs || []);
    addElements(WorldElementType.KINGDOM, world.kingdoms || []);
    addElements(WorldElementType.CLIMATE, world.climate || []);
    addElements(WorldElementType.RESOURCE, world.resources || []);
    addElements(WorldElementType.WILDLIFE, world.wildlife || []);
    addElements(WorldElementType.ART, world.arts || []);
    addElements(WorldElementType.ETHNIC_GROUP, world.ethnicGroups || []);
    addElements(WorldElementType.SOCIAL_CLASS, world.socialClasses || []);
    addElements(WorldElementType.IMPORTANT_CHARACTER, world.importantCharacters || []);

    return elements;
}