import { ref } from 'vue';
import { getReportDraft } from '@/api/studySessions';
import { useElapsedSeconds } from './useElapsedSeconds';

/**
 * “结束会话总结”弹窗：编辑/预览总结内容。
 * 有学习残片且尚未填写内容时，先取 AI 聚合草稿作为编辑起点（失败不阻塞手写），
 * 等待期间展示“已等待 N 秒”提示。
 */
export function useSummaryReport(options: {
    getSessionNum: () => string;
    hasFragments: () => boolean;
}) {
    const summaryDialogVisible = ref(false);
    const summaryContent = ref("");
    const summaryPreview = ref(false);
    const summaryLoading = ref(false);
    const { seconds: summaryLoadingSeconds, start: startLoadingTimer, stop: stopLoadingTimer } = useElapsedSeconds();

    const openSummaryDialog = async () => {
        summaryDialogVisible.value = true;
        // 有残片且未填写过总结时，用 AI 聚合草稿作为编辑起点
        if (!summaryContent.value.trim() && options.hasFragments()) {
            summaryLoading.value = true;
            startLoadingTimer();
            try {
                const res = await getReportDraft(options.getSessionNum());
                if (res?.code === 200 && res.data) {
                    summaryContent.value = res.data;
                }
            } catch {
                // 草稿失败不阻塞手写
            } finally {
                summaryLoading.value = false;
                stopLoadingTimer();
            }
        }
    };

    const closeSummaryDialog = () => {
        summaryDialogVisible.value = false;
        stopLoadingTimer();
    };

    return {
        summaryDialogVisible,
        summaryContent,
        summaryPreview,
        summaryLoading,
        summaryLoadingSeconds,
        openSummaryDialog,
        closeSummaryDialog,
    };
}