export interface SubpageSectionConfig {
    title: string;
    slug: string;        // auto-derived from title, used as anchor
    description?: string;
    albumIds: string[];
}

export interface SubpageConfig {
    name: string;
    slug: string;
    title?: string;
    subtitle?: string;
    albumIds: string[];  // flat list (all albums, incl. from sections)
    sections?: SubpageSectionConfig[];
    password?: string;
    grid?: Partial<GridConfig>;
}

export interface FooterConfig {
    name?: string;
    instagram?: string;
    email?: string;
    website?: string;
}

export interface LegalConfig {
    enabled: boolean;
    name: string;
    address: string;
    zipCity: string;
    country: string;
    email?: string;
    phone?: string;
    taxId?: string;
    vatId?: string;
    extraInfo?: string;
}

export interface ThemeConfig {
    preset: string;
    accent: string;
    fonts: { heading: string; body: string; caption: string };
    radius: number;
    photoFrame: 'none' | 'passepartout' | 'shadow';
    grain: boolean;
    headerDot: boolean;
    heroStyle: 'split' | 'fullbleed' | 'minimal' | 'stacked' | 'typographic' | 'mosaic';
}

export interface GridConfig {
    columns: number;
    gap: number;
    aspectRatio: string;
    layout: 'masonry' | 'uniform' | 'showcase' | 'filmstrip' | 'editorial-flow';
}

export interface AppConfig {
    immich: { apiUrl: string; apiKey: string };
    authSecret: string;
    albums: string[];
    standaloneAlbums: string[];
    subpages: SubpageConfig[];
    siteTitle: string;
    siteSubtitle: string;
    seo: {
        title: string;
        description: string;
        noIndex: boolean;
        noFollow: boolean;
    };
    heroImages: string[];
    exifOnHover: boolean;
    grid: GridConfig;
    theme: ThemeConfig;
    footer: FooterConfig | null;
    legal: LegalConfig;
    map: boolean;
    transitions: boolean;
    albumOverrides: Record<string, string>;
    cacheTtl: number;
    rateLimitRpm: number;
    needsSetup?: boolean;
}

export interface GalleryYaml {
    hero?: string | string[];
    albums?: string[];
    subpages?:
    | Record<string, string[] | Array<string | Record<string, string>>>
    | Array<{
        name: string;
        title?: string;
        subtitle?: string;
        albums?: Array<string | Record<string, string>>;
        sections?: Array<{
            title: string;
            description?: string;
            albums: Array<string | Record<string, string>>;
        }>;
        password?: string;
        grid?: {
            columns?: number;
            gap?: number;
            aspectRatio?: string;
            layout?: string;
        };
    }>;
}

export interface SettingsYaml {
    title?: string;
    subtitle?: string;
    seo?: {
        title?: string;
        description?: string;
        noIndex?: boolean;
        noFollow?: boolean;
    };
    exifOnHover?: boolean;
    map?: boolean;
    transitions?: boolean;
    theme?:
    | string
    | {
        preset?: string;
        accent?: string;
        fonts?: { heading?: string; body?: string; caption?: string };
        radius?: number;
        photoFrame?: string;
        grain?: boolean;
        headerDot?: boolean;
        heroStyle?: string;
    };
    grid?: {
        columns?: number;
        gap?: number;
        aspectRatio?: string;
        layout?: string;
    };
    footer?: FooterConfig;
    legal?: Partial<LegalConfig>;
}

export function slugify(name: string): string {
    return name
        .toLowerCase()
        .normalize('NFD')
        .replace(/[\u0300-\u036f]/g, '')
        .replace(/[^a-z0-9]+/g, '-')
        .replace(/^-+|-+$/g, '');
}