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

export interface Attribute {
    id?: string;
    name: string;
    description: string;
}

export interface CharacterProps {
    id: string | null;
    name: string;
    lastName: string;
    category: string;
    title: string;
    image: string;
    physical?: Attribute[];
    psychological?: Attribute[];
    relations?: Attribute[];
    skills?: Attribute[];
    weaknesses?: Attribute[];
    strengths?: Attribute[];
    goals?: Attribute[];
    motivations?: Attribute[];
    role: string;
    biography?: string;
    history?: string;
}

/**
 * Database row types (snake_case from SQLite)
 */
export interface DBCharacter {
    character_id: string;
    book_id: string;
    user_id: string;
    first_name: string;
    last_name?: string;
    category: string;
    title?: string;
    image?: string;
    role?: string;
    biography?: string;
    history?: string;
    char_meta: string;
    synced?: number;
}

export interface DBCharacterAttribute {
    attr_id: string;
    character_id: string;
    user_id: string;
    attribute_name: string; // Format: "section:attributeName" (e.g., "physical:Height")
    attribute_value: string; // JSON stringified Attribute
    attr_meta: string;
    synced?: number;
}

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

export function dbToCharacter(dbChar: DBCharacter, attributes: DBCharacterAttribute[] = []): CharacterProps {
    // Group attributes by section
    const physical: Attribute[] = [];
    const psychological: Attribute[] = [];
    const relations: Attribute[] = [];
    const skills: Attribute[] = [];
    const weaknesses: Attribute[] = [];
    const strengths: Attribute[] = [];
    const goals: Attribute[] = [];
    const motivations: Attribute[] = [];

    for (const attr of attributes) {
        try {
            const parsedValue: Attribute = JSON.parse(attr.attribute_value);
            const section = attr.attribute_name.split(':')[0];

            switch (section) {
                case 'physical':
                    physical.push(parsedValue);
                    break;
                case 'psychological':
                    psychological.push(parsedValue);
                    break;
                case 'relations':
                    relations.push(parsedValue);
                    break;
                case 'skills':
                    skills.push(parsedValue);
                    break;
                case 'weaknesses':
                    weaknesses.push(parsedValue);
                    break;
                case 'strengths':
                    strengths.push(parsedValue);
                    break;
                case 'goals':
                    goals.push(parsedValue);
                    break;
                case 'motivations':
                    motivations.push(parsedValue);
                    break;
            }
        } catch (error) {
            console.error('Failed to parse character attribute:', error);
        }
    }

    return {
        id: dbChar.character_id,
        name: dbChar.first_name,
        lastName: dbChar.last_name || '',
        category: dbChar.category as any,
        title: dbChar.title || '',
        image: dbChar.image || '',
        physical,
        psychological,
        relations,
        skills,
        weaknesses,
        strengths,
        goals,
        motivations,
        role: dbChar.role || '',
        biography: dbChar.biography,
        history: dbChar.history
    };
}

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

export function characterToDb(character: CharacterProps, bookId: string, userId: string, synced: number = 0): DBCharacter {
    return {
        character_id: character.id || crypto.randomUUID(),
        book_id: bookId,
        user_id: userId,
        first_name: character.name,
        last_name: character.lastName,
        category: character.category,
        title: character.title,
        image: character.image,
        role: character.role,
        biography: character.biography,
        history: character.history,
        char_meta: '',
        synced
    };
}

export function characterAttributesToDb(
    character: CharacterProps,
    userId: string,
    synced: number = 0
): DBCharacterAttribute[] {
    const attributes: DBCharacterAttribute[] = [];

    const addAttributes = (section: string, attrs: Attribute[]) => {
        for (const attr of attrs) {
            attributes.push({
                attr_id: attr.id || crypto.randomUUID(),
                character_id: character.id || '',
                user_id: userId,
                attribute_name: `${section}:${attr.name}`,
                attribute_value: JSON.stringify(attr),
                attr_meta: '',
                synced
            });
        }
    };

    addAttributes('physical', character.physical || []);
    addAttributes('psychological', character.psychological || []);
    addAttributes('relations', character.relations || []);
    addAttributes('skills', character.skills || []);
    addAttributes('weaknesses', character.weaknesses || []);
    addAttributes('strengths', character.strengths || []);
    addAttributes('goals', character.goals || []);
    addAttributes('motivations', character.motivations || []);

    return attributes;
}