/** Development-only fake service. Its balance never touches the player's wallet. */
export default class CoinMadnessMockApi {
    private failNext = false;
    constructor(private store: { read: () => any; write: (value: any) => void; level: () => number }, private now = () => Date.now()) {}
    request(action: string, body: any = {}): any {
        if (this.failNext) { this.failNext = false; return { code: 0, msg: '模拟接口失败，请重试' }; }
        const now = this.now();
        let state = this.store.read();
        if (!state || action === 'reset') {
            state = { config: { periodId: 'mock-' + now, title: '金币狂热 · 模拟版', startsAt: now,
                endsAt: now + 7 * 86400000, priceCents: 99,
                stages: [{ wins: 2, coins: 150 }, { wins: 3, coins: 200 }, { wins: 5, coins: 250 },
                    { wins: 10, coins: 300 }, { wins: 15, coins: 400 }] },
                paidAt: 0, stage: 0, totalWins: 0, baseline: 0, lastLevel: this.store.level(), settled: false, mockBalance: 1000 };
        }
        if (action === 'fail_next') this.failNext = true;
        if (action === 'expire') state.config.endsAt = now;
        const target = state.config.stages[state.stage];
        const progress = Math.min(target ? target.wins : 0, state.totalWins - state.baseline);
        let granted = 0;
        if (now >= state.config.endsAt && !state.settled) {
            if (state.paidAt && target && progress >= target.wins) { granted = target.coins; state.stage++; }
            state.settled = true;
        }
        let msg = '';
        if (action === 'purchase' || action === 'claim') {
            if (body.periodId !== state.config.periodId) msg = '活动期次已变更，请刷新';
            else if (now < state.config.startsAt || now >= state.config.endsAt) msg = '活动已结束或尚未开始';
            else if (action === 'purchase' && !state.paidAt) {
                state.paidAt = now; state.totalWins = 0; state.baseline = 0; state.lastLevel = this.store.level();
            } else if (action === 'claim') {
                if (!state.paidAt || body.stage !== state.stage || !target || progress < target.wins) msg = '当前奖励不可领取';
                else { granted = target.coins; state.stage++; state.baseline = state.totalWins; }
            }
        }
        if (action === 'simulate_win' && state.paidAt && !state.settled && now >= state.config.startsAt) state.totalWins++;
        state.mockBalance += granted;
        this.store.write(state);
        const next = state.config.stages[state.stage];
        const data = { available: true, serverNow: now, mockBalance: state.mockBalance, granted,
            state: { ...state, progress: Math.min(next ? next.wins : 0, state.totalWins - state.baseline) } };
        return msg ? { code: 0, msg, data } : { code: 1, data };
    }
}