import type { CardData } from './card.types';

/**
 * Central card library. All card definitions live here, keyed by id.
 * Content is data — add cards by adding entries, not code paths.
 */
export const CARD_LIBRARY: Record<string, CardData> = {
    strike: {
        id: 'strike',
        name: 'Strike',
        type: 'attack',
        rarity: 'starter',
        cost: 1,
        target: 'enemy',
        description: 'Deal 6 damage.',
        effect: { damage: 6 },
    },
    defend: {
        id: 'defend',
        name: 'Defend',
        type: 'skill',
        rarity: 'starter',
        cost: 1,
        target: 'self',
        description: 'Gain 5 block.',
        effect: { block: 5 },
    },
    bash: {
        id: 'bash',
        name: 'Bash',
        type: 'attack',
        rarity: 'starter',
        cost: 2,
        target: 'enemy',
        description: 'Deal 10 damage.',
        effect: { damage: 10 },
    },
    quick_slash: {
        id: 'quick_slash',
        name: 'Quick Slash',
        type: 'attack',
        rarity: 'common',
        cost: 1,
        target: 'enemy',
        description: 'Deal 4 damage. Draw 1 card.',
        effect: { damage: 4, draw: 1 },
    },
    cleave: {
        id: 'cleave',
        name: 'Cleave',
        type: 'attack',
        rarity: 'common',
        cost: 1,
        target: 'all-enemies',
        description: 'Deal 8 damage to ALL enemies.',
        effect: { damage: 8 },
    },
    flurry: {
        id: 'flurry',
        name: 'Flurry',
        type: 'attack',
        rarity: 'uncommon',
        cost: 1,
        target: 'enemy',
        description: 'Deal 3 damage 3 times.',
        effect: { damage: 3, hits: 3 },
    },
    adrenaline: {
        id: 'adrenaline',
        name: 'Adrenaline',
        type: 'skill',
        rarity: 'uncommon',
        cost: 0,
        target: 'none',
        description: 'Gain 1 energy. Draw 2 cards. Exhaust.',
        effect: { energy: 1, draw: 2 },
        exhaust: true,
    },
};

/** Look up a card definition by id; throws early on typos rather than failing silently. */
export function getCard(id: string): CardData {
    const card = CARD_LIBRARY[id];
    if (!card) throw new Error(`Unknown card id: ${id}`);
    return card;
}

/** The deck every run begins with (Slay the Spire-style: 5 Strike, 4 Defend, 1 Bash). */
export const STARTER_DECK: readonly string[] = [
    'strike', 'strike', 'strike', 'strike', 'strike',
    'defend', 'defend', 'defend', 'defend',
    'bash',
];