import Button from "@mui/material/Button";
import { EMPTY_RECHARGE_OVERVIEW, EMPTY_RECHARGE_SUMMARY, formatAmount, formatUsdMinor } from "../format.js";

// 渠道对账页：按结算月核对各渠道的流水与扣费。谷歌口径来自 Orders API 同步的实付明细；
// 三方与币商没有渠道侧扣费数据时如实标注，不做拍脑袋估算。
export function FinanceReconciliation({ loading, month, onMonthChange, overview, summary }) {
    const data = summary || EMPTY_RECHARGE_SUMMARY;
    const paid = (overview || EMPTY_RECHARGE_OVERVIEW).googlePaid;
    const totalUsd = Number(data.total?.usdMinorAmount) || 0;
    const feeUsd = paid.estFeeUsdMinor;
    const taxUsd = paid.estTaxUsdMinor;
    const netUsd = totalUsd - feeUsd - taxUsd;

    return (
        <div className="finance-overview">
            <div className="finance-recon-toolbar">
                <Button size="small" variant="outlined" onClick={() => onMonthChange(-1)}>
                    ‹ 上月
                </Button>
                <span className="finance-recon-toolbar__month">{month.label} 结算期</span>
                <Button disabled={month.isCurrent} size="small" variant="outlined" onClick={() => onMonthChange(1)}>
                    下月 ›
                </Button>
                <span className="finance-hint" style={{ marginLeft: "auto" }}>
                    对账口径：平台流水 × 谷歌 Orders API 实付 · 中国时区
                </span>
            </div>

            <section className="finance-card">
                <div className="finance-card__head">
                    <span className="finance-card__title">
                        结算瀑布<small>全渠道 · USD{paid.unsyncedCount > 0 ? " · 谷歌扣费为已同步部分估算" : ""}</small>
                    </span>
                </div>
                <div className="finance-card__body">
                    {loading ? (
                        <p className="finance-hint">统计中…</p>
                    ) : (
                        <div className="finance-wfall">
                            <WaterfallRow amount={totalUsd} color="var(--fin-ink)" label="充值流水" max={totalUsd} />
                            <WaterfallRow amount={-feeUsd} color="#E19B3C" label="渠道手续费（估）" max={totalUsd} />
                            <WaterfallRow amount={-taxUsd} color="#C86A6A" label="代缴税费（估）" max={totalUsd} />
                            <WaterfallRow amount={netUsd} color="var(--fin-pos)" label="净入账（估）" max={totalUsd} />
                        </div>
                    )}
                </div>
            </section>

            <div className="finance-recon-grid">
                <section className="finance-card">
                    <div className="finance-card__head">
                        <span className="finance-badge finance-badge--google">谷歌</span>
                        {paid.unsyncedCount > 0 ? (
                            <span className="finance-pill finance-pill--warn">
                                <i />
                                {formatAmount(paid.unsyncedCount)} 笔待同步
                            </span>
                        ) : (
                            <span className="finance-pill finance-pill--ok">
                                <i />
                                实付已全量同步
                            </span>
                        )}
                    </div>
                    <div className="finance-card__body">
                        <ReconLine
                            label="平台流水"
                            value={formatUsdMinor(data.googlePlay?.usdMinorAmount || 0, "USD")}
                        />
                        <ReconLine
                            label={`已同步实付覆盖（${formatAmount(paid.syncedCount)}/${formatAmount(paid.googleBillCount)} 笔）`}
                            value={formatUsdMinor(paid.coveredUsdMinor, "USD")}
                        />
                        <ReconLine
                            label="谷歌服务费（估）"
                            negative
                            value={`− ${formatUsdMinor(paid.estFeeUsdMinor, "USD")}`}
                        />
                        <ReconLine
                            label="代缴税费（估）"
                            negative
                            value={`− ${formatUsdMinor(paid.estTaxUsdMinor, "USD")}`}
                        />
                        <ReconLine label="预计净入账" total value={formatUsdMinor(paid.estNetUsdMinor, "USD")} />
                        <p className="finance-hint" style={{ marginTop: 10 }}>
                            与 Play Console 财务报告按月核对；未同步订单可在流水页批量补数
                        </p>
                    </div>
                </section>

                <section className="finance-card">
                    <div className="finance-card__head">
                        <span className="finance-badge finance-badge--thirdparty">三方</span>
                    </div>
                    <div className="finance-card__body">
                        <ReconLine
                            label="三方流水"
                            value={formatUsdMinor(data.thirdParty?.usdMinorAmount || 0, "USD")}
                        />
                        <ReconLine label="笔数" value={`${formatAmount(data.thirdParty?.billCount || 0)} 笔`} />
                        <ReconLine label="渠道扣费" value="V5Pay 逐笔回传 / MiFaPay 未提供" />
                        <p className="finance-hint" style={{ marginTop: 10 }}>
                            V5Pay 的 fee/tax 已逐笔展示在流水明细；MiFaPay 仅提供毛额，需用渠道后台月账单人工核对
                        </p>
                    </div>
                </section>

                <section className="finance-card">
                    <div className="finance-card__head">
                        <span className="finance-badge finance-badge--coinseller">币商</span>
                    </div>
                    <div className="finance-card__body">
                        <ReconLine
                            label="净进货（进货 − 冲回）"
                            value={formatUsdMinor(data.coinSeller?.usdMinorAmount || 0, "USD")}
                        />
                        <ReconLine label="记录数" value={`${formatAmount(data.coinSeller?.billCount || 0)} 笔`} />
                        <ReconLine label="金币入库" value={`${formatAmount(data.coinSeller?.coinAmount || 0)} 金币`} />
                        <p className="finance-hint" style={{ marginTop: 10 }}>
                            打款凭证与 TRC20 交易号逐笔登记在流水明细，可按凭证号搜索核对
                        </p>
                    </div>
                </section>
            </div>
        </div>
    );
}

function WaterfallRow({ amount, color, label, max }) {
    const width = max > 0 ? (Math.abs(amount) / max) * 100 : 0;
    const negative = amount < 0;
    return (
        <div className="finance-wfall__row">
            <span className="finance-wfall__label">{label}</span>
            <span className="finance-wfall__track">
                <i style={{ background: color, width: `${Math.min(100, width)}%` }} />
            </span>
            <span className={negative ? "finance-wfall__val num finance-amount--negative" : "finance-wfall__val num"}>
                {negative ? `− ${formatUsdMinor(-amount, "USD")}` : formatUsdMinor(amount, "USD")}
            </span>
        </div>
    );
}

function ReconLine({ label, negative, total, value }) {
    return (
        <div className={["finance-recon-line", total ? "finance-recon-line--total" : ""].filter(Boolean).join(" ")}>
            <span>{label}</span>
            <b className={negative ? "num finance-amount--negative" : "num"}>{value}</b>
        </div>
    );
}