from ChanKLU import ChanKLU
from ChanEnum import Chan_MACD_STATE, Chan_MACDSEG_DIR, Chan_MACDHISTSET_DIR
from ChanMACDSeg import ChanMACDSeg
from ChanMACDUnitTF import ChanMACDUnitTF
from ChanMACDHistSet import ChanMACDHistSet

class ChanMACD():
    def __init__(self, klu_list: list[ChanKLU]):
        self.klu_list = klu_list
        self.seg_list = []
        self.unittf_list = []
        self.histset_list = []
        self.cal_macd()
    def cal_macd(self):
        last_seg = None
        last_unittf = None
        last_histset = None

        last_klu = None
        for klu in self.klu_list:
            klu.cal_macd_state()

            # 1) 只有当 MACD 已可用(非 UNKNOWN)时，才开始初始化段/单元
            if last_seg is None:
                if klu.macd_state != Chan_MACD_STATE.UNKNOWN:
                    # 初始化首段与首单元
                    seg_dir = Chan_MACDSEG_DIR.ABOVE if klu.macd >= 0 else Chan_MACDSEG_DIR.UNDER
                    seg = ChanMACDSeg(klu.time, klu, None, seg_dir)
                    self.seg_list.append(seg)
                    last_seg = seg

                    unittf = ChanMACDUnitTF(klu.time, klu, None, None)
                    self.unittf_list.append(unittf)
                    last_unittf = unittf

                    # 初始化首个直方图集合（根据当前柱体正负）
                    if klu.macdhist >= 0:
                        histset = ChanMACDHistSet(klu.time, klu, last_unittf, Chan_MACDHISTSET_DIR.ABOVE)
                    else:
                        histset = ChanMACDHistSet(klu.time, klu, last_unittf, Chan_MACDHISTSET_DIR.UNDER)
                    self.histset_list.append(histset)
                    last_histset = histset
                    last_seg.add_histset(histset)
                    last_unittf.add_histset(histset)
                    last_seg.add_unittf(unittf)
                # 未就绪则继续等下一根；已就绪亦已完成首个结构初始化，继续下一根
                last_klu = klu
                continue

            # 2) 过零切段/切单元
            if klu.macd_state == Chan_MACD_STATE.CROSS0:
                # 收尾旧段
                last_seg.end_klu = last_klu
                last_seg.end_time = last_klu.time
                # 新段方向取反
                new_dir = Chan_MACDSEG_DIR.UNDER if last_seg.seg_dir == Chan_MACDSEG_DIR.ABOVE else Chan_MACDSEG_DIR.ABOVE
                seg = ChanMACDSeg(klu.time, klu, last_seg, new_dir)
                self.seg_list.append(seg)
                last_seg.set_next(seg)
                last_seg = seg

                # 切换 unit tf（以当前histset收尾为边界）  
                unittf = ChanMACDUnitTF(klu.time, klu, last_histset, None)
                self.unittf_list.append(unittf)
                if last_unittf:
                    last_unittf.end_klu = last_klu
                    last_unittf.end_time = last_klu.time
                    last_unittf.set_next(unittf)
                last_unittf = unittf

            # 3) 直方图集合（基于当前 unittf）
            if klu.macdhist >= 0:
                if last_histset and last_histset.histset_dir == Chan_MACDHISTSET_DIR.ABOVE:
                    last_histset.add_klu(klu)
                else:
                    # 结束旧 histset（以前一根结束更合理）
                    if last_histset:
                        end_klu = getattr(klu, 'pre', None) or klu
                        last_histset.end_klu = end_klu
                        last_histset.end_time = end_klu.time
                    histset = ChanMACDHistSet(klu.time, klu, last_unittf, Chan_MACDHISTSET_DIR.ABOVE)
                    self.histset_list.append(histset)
                    if last_histset:
                        last_histset.set_next(histset)
                    last_histset = histset
                    if last_seg:
                        last_seg.add_histset(histset)
                    if last_unittf:
                        last_unittf.add_histset(histset)
            else:
                if last_histset and last_histset.histset_dir == Chan_MACDHISTSET_DIR.UNDER:
                    last_histset.add_klu(klu)
                else:
                    if last_histset:
                        end_klu = getattr(klu, 'pre', None) or klu
                        last_histset.end_klu = end_klu
                        last_histset.end_time = end_klu.time
                    histset = ChanMACDHistSet(klu.time, klu, last_unittf, Chan_MACDHISTSET_DIR.UNDER)
                    self.histset_list.append(histset)
                    if last_histset:
                        last_histset.set_next(histset)
                    last_histset = histset
                    if last_seg:
                        last_seg.add_histset(histset)
                    if last_unittf:
                        last_unittf.add_histset(histset)
            last_klu = klu
        # 循环结束后，收尾当前打开的结构
            if last_seg and getattr(last_seg, 'end_klu', None) is None:
                last_seg.end_klu = last_klu
                last_seg.end_time = last_klu.time
            if last_unittf and getattr(last_unittf, 'end_klu', None) is None:
                last_unittf.end_klu = last_klu
                last_unittf.end_time = last_klu.time
            if last_histset and getattr(last_histset, 'end_klu', None) is None:
                last_histset.end_klu = last_klu
                last_histset.end_time = last_klu.time