# ============================================================
# 分析视图（moduleId: domain-analytics, 可重生 ✅）
# EX-07 方案对比表（KPI 逐项 diff）/ EX-08 KPI 仪表盘
# ============================================================
from __future__ import annotations

from typing import Any

from server.aps_domain.views import world_summary
from server.timeutil import parse_dt

World = dict[str, Any]


def build_utilization_report(world: World, track: str = "flex", days: int = 7) -> dict:
    """EX-06：资源利用率增强报告（柔性设备 + 班组）。

    设备口径与「设备负荷」视口一致：只统计落在班次工作窗内的时间，
    统计窗口跟着排产结果走；否则计划排在 10 月时整屏都会是 0%/休。
    """
    from server.aps_domain.views import _latest_flex_version, _shift_windows_for
    from server.state.seed import ensure_flex_seed
    from server.timeutil import add_minutes, fmt_date, parse_dt, today0

    tr = (track or "flex").lower()
    if tr != "flex":
        # 固定产线走「设备负荷」视口的产线口径，这里只做指路
        from server.aps_domain.views import load_view
        lv = load_view(world, days=days)
        s = world_summary(world)
        return {
            "track": "fixed",
            "summary": {
                "avgUtilization": s.get("avgUtilization"),
                "versionNo": s.get("versionNo"),
                "overloaded": sum(1 for r in lv.get("rows", [])
                                  for c in r.get("cells", []) if (c.get("ratio") or 0) > 1),
            },
            "equipment": [], "teams": [], "days": lv.get("days", []),
            "hint": "固定产线请看「设备负荷」视图；这里只统计柔性试排的设备与班组。",
            "load": lv,
        }

    ensure_flex_seed(world)
    latest = _latest_flex_version(world)
    vid = latest["id"] if latest else None
    wos = [w for w in world.get("flexWorkOrders") or []
           if (not vid or w.get("versionId") == vid) and not w.get("frozen")]

    # 统计窗口跟着排产结果走：从最早开工那天开始，没有排产才退回今天
    starts = []
    for w in wos:
        try:
            starts.append(parse_dt(w["plannedStartTime"]))
        except Exception:
            continue
    base = min(starts).replace(hour=0, minute=0, second=0, microsecond=0) if starts else today0()
    day_list = [fmt_date(add_minutes(base, i * 24 * 60)) for i in range(max(1, days))]

    day_windows = {d: _shift_windows_for(world, d) for d in day_list}   # 当日有效工作窗
    shift_total = sum((b - a).total_seconds() / 60
                      for ws in day_windows.values() for a, b in ws)     # 窗口内总可用分钟

    # ---- 设备行 ----
    eq_rows = []
    for eq in world.get("flexEquipment", []) or []:
        eid = eq["id"]
        rate = float(eq.get("availabilityRate") if eq.get("availabilityRate") is not None else 1.0)
        used_total = 0.0
        cells = []
        for d in day_list:
            windows = day_windows[d]
            used = 0.0
            for w in wos:
                if w.get("equipmentId") != eid:
                    continue
                try:
                    ws, we = parse_dt(w["plannedStartTime"]), parse_dt(w["plannedEndTime"])
                except Exception:
                    continue
                for a, b in windows:                      # 只累计与工作窗的重叠
                    lo, hi = max(ws, a), min(we, b)
                    if hi > lo:
                        used += (hi - lo).total_seconds() / 60
            avail = round(sum((b - a).total_seconds() / 60 for a, b in windows) * rate) if windows else 0
            ratio = (used / avail) if avail else 0.0
            cells.append({
                "date": d, "used": round(used, 1), "avail": round(avail, 1),
                "ratio": round(ratio, 3), "offShift": not windows,
            })
            used_total += used
        avail_total = sum(c["avail"] for c in cells)
        util = used_total / avail_total if avail_total else 0.0
        eq_rows.append({
            "code": eq.get("code"), "name": eq.get("name"), "zone": eq.get("zone"),
            "status": eq.get("status"), "movable": bool(eq.get("movable")),
            "usedMinutes": round(used_total, 1),
            "availMinutes": round(avail_total, 1),
            "utilization": round(util, 3),
            "peakRatio": max((c["ratio"] for c in cells), default=0),
            "cells": cells,
            "alert": "crit" if util >= 0.95 or any(c["ratio"] > 1 for c in cells)
            else "warn" if util >= 0.85 else "ok",
        })
    eq_rows.sort(key=lambda r: -r["utilization"])

    # ---- 班组行（SC-11）：按工序并发峰值 / 人数 ----
    team_rows = []
    for team in world.get("flexTeams", []) or []:
        ops = list(team.get("supportOps") or [])
        members = int(team.get("memberCount") or 0)
        # 扫描工单：同班组覆盖工序的重叠最大并发
        intervals = []
        for w in wos:
            if w.get("operationCode") not in ops:
                continue
            if team.get("code") and w.get("teamCode") and w.get("teamCode") != team.get("code"):
                # 若工单已钉具体班组，只计本班组
                continue
            try:
                intervals.append((parse_dt(w["plannedStartTime"]), parse_dt(w["plannedEndTime"])))
            except Exception:
                pass
        peak = 0
        for i, (s, e) in enumerate(intervals):
            concurrent = sum(1 for s2, e2 in intervals if s < e2 and e > s2)
            peak = max(peak, concurrent)
        # 粗利用率：本班组工单总分钟 / (人数 × 班次 × 工作日)
        used = 0.0
        for s, e in intervals:
            used += (e - s).total_seconds() / 60
        avail = members * shift_total               # 班组可用人时 = 人数 × 窗口内班次分钟
        util = used / avail if avail else 0.0
        team_rows.append({
            "code": team.get("code"), "name": team.get("name"),
            "memberCount": members, "supportOps": ops,
            "skillLevel": team.get("skillLevel"),
            "peakConcurrent": peak,
            "usedMinutes": round(used, 1),
            "availMinutes": round(avail, 1),
            "utilization": round(util, 3),
            "saturated": members > 0 and peak >= members,
            "alert": "crit" if (members > 0 and peak > members) or util >= 0.95
            else "warn" if peak >= members or util >= 0.85 else "ok",
        })
    team_rows.sort(key=lambda r: -r["utilization"])

    utils = [r["utilization"] for r in eq_rows if r["status"] == "RUNNING"]
    avg = round(sum(utils) / len(utils), 3) if utils else 0.0
    report = {
        "track": "flex",
        "versionNo": latest.get("versionNo") if latest else None,
        "versionStatus": latest.get("status") if latest else None,
        "trialOnly": bool(latest.get("trialOnly")) if latest else None,
        "shiftMinutes": round(shift_total),
        "windowStart": day_list[0] if day_list else None,
        "windowDays": len(day_list),
        "days": day_list,
        "summary": {
            "avgUtilization": avg,
            "equipmentCount": len(eq_rows),
            "runningCount": sum(1 for r in eq_rows if r["status"] == "RUNNING"),
            "overloaded": sum(1 for r in eq_rows if r["alert"] == "crit"),
            "warnCount": sum(1 for r in eq_rows if r["alert"] == "warn"),
            "idleCount": sum(1 for r in eq_rows if r["utilization"] < 0.15 and r["status"] == "RUNNING"),
            "teamSaturated": sum(1 for r in team_rows if r.get("saturated")),
        },
        "equipment": eq_rows,
        "teams": team_rows,
        "hint": "占用时间只统计班次内的时间：绿色=空闲，黄色=偏忙，橙色=接近排满，"
                "红色=排满还超了；班组「人手到顶」表示同一时段需要的操作人数已达到班组人数。",
    }
    if shift_total <= 0:
        report["emptyReason"] = "这个工厂还没有登记班次，算不出可用工时：请先在制造主数据里补班次。"
    elif not wos:
        report["emptyReason"] = "这一版柔性试排没有排任何工序，设备占用为空。"
    return report


def build_kpi_dashboard(world: World) -> dict:
    """EX-08：固定轨 + 柔性轨 + 执行进度聚合仪表盘（只读）。"""
    from server.state.seed import ensure_flex_seed
    ensure_flex_seed(world)

    fixed = world_summary(world)
    # 准时率（固定）：非超期 PO / 全部 PO
    on_time_rate = None
    wip = 0
    overdue_po = 0
    if fixed.get("hasVersion"):
        v = world["scheduleVersions"][-1]
        pos = [p for p in world["productionOrders"] if p.get("schedulingVersionId") == v["id"]]
        so_by = {s["id"]: s for s in world["salesOrders"]}
        for po in pos:
            so = so_by.get(po.get("salesOrderId"))
            if so and po.get("plannedEndDate"):
                late = parse_dt(po["plannedEndDate"]) > parse_dt(so["deliveryDate"] + " 18:00")
                if late:
                    overdue_po += 1
            if po.get("status") in ("CONFIRMED", "IN_PROGRESS", "RELEASED"):
                wip += 1
        if pos:
            on_time_rate = round((len(pos) - overdue_po) / len(pos), 3)

    flex_ver = (world.get("flexScheduleVersions") or [None])[-1]
    flex = None
    if flex_ver:
        oc = flex_ver.get("orderCount") or flex_ver.get("vlCount") or 0
        ot = flex_ver.get("onTimeCount") or 0
        flex = {
            "versionNo": flex_ver.get("versionNo"),
            "status": flex_ver.get("status"),
            "sortMode": flex_ver.get("sortMode"),
            "woCount": flex_ver.get("woCount", 0),
            "vlCount": flex_ver.get("vlCount", 0),
            "conflictCount": flex_ver.get("conflictCount", 0),
            "totalTardiness": round(flex_ver.get("totalTardiness") or 0, 1),
            "avgUtilization": round(flex_ver.get("avgUtilization") or 0, 3),
            "onTimeCount": ot,
            "orderCount": oc,
            "onTimeRate": round(ot / oc, 3) if oc else None,
            "makespan": flex_ver.get("makespan"),
        }

    # 冲突未解决
    flex_cf = sum(1 for c in world.get("flexConflicts", []) if not c.get("isResolved"))
    fixed_cf = sum(1 for c in world.get("conflicts", [])
                   if not c.get("isResolved") and (
                       not fixed.get("hasVersion")
                       or c.get("versionId") == world["scheduleVersions"][-1]["id"]))

    # MES 执行
    mes_rows = [w for w in world.get("flexWorkOrders", []) if w.get("mesExternalId")]
    if flex_ver:
        mes_rows = [w for w in mes_rows if w.get("versionId") == flex_ver["id"]]
    mes_done = sum(1 for w in mes_rows
                   if w.get("status") == "COMPLETED" or (w.get("progressPct") or 0) >= 100)
    mes_pct = round(mes_done / len(mes_rows), 3) if mes_rows else None

    # 柔性在制
    flex_wip = sum(1 for w in world.get("flexWorkOrders", [])
                   if flex_ver and w.get("versionId") == flex_ver["id"]
                   and w.get("status") in ("RUNNING", "RELEASED", "PENDING"))

    cards = [
        {"id": "util", "label": "平均利用率",
         "value": (f"{round((fixed.get('avgUtilization') or 0) * 100)}%"
                   if fixed.get("hasVersion") else
                   (f"{round((flex or {}).get('avgUtilization', 0) * 100)}%" if flex else "—")),
         "hint": "设备实际占用时间 ÷ 可用时间"},
        {"id": "ontime", "label": "准时率",
         "value": (f"{round(on_time_rate * 100)}%" if on_time_rate is not None
                   else (f"{round(flex['onTimeRate'] * 100)}%" if flex and flex.get("onTimeRate") is not None
                         else "—")),
         "hint": "能在客户交期前完工的订单占比"},
        {"id": "delay", "label": "总延误",
         "value": (f"{fixed.get('totalTardiness')}h" if fixed.get("hasVersion")
                   else (f"{flex['totalTardiness']}h" if flex else "—")),
         "hint": "所有订单超出交期的小时数合计"},
        {"id": "wip", "label": "在制工序",
         "value": str(wip + flex_wip),
         "hint": f"固定产线 {wip} 条 + 柔性排产 {flex_wip} 条"},
        {"id": "conflict", "label": "待处理冲突",
         "value": str(fixed_cf + flex_cf),
         "hint": f"固定产线 {fixed_cf} 条 / 柔性排产 {flex_cf} 条"},
        {"id": "mes", "label": "车间完工率",
         "value": (f"{round(mes_pct * 100)}%" if mes_pct is not None else "—"),
         "hint": (f"已下发车间 {len(mes_rows)} 条 · 已完工 {mes_done} 条"
                  if mes_rows else "还没有工序下发到车间，暂时算不出完工率")},
    ]

    # 数据来源说明：这张表算的是哪一版、有没有下发车间，必须写在页面上。
    if fixed.get("hasVersion"):
        source = {"track": "FIXED", "versionNo": fixed.get("versionNo"),
                  "status": fixed.get("status"), "trialOnly": False}
    elif flex:
        source = {"track": "FLEX", "versionNo": flex.get("versionNo"),
                  "status": flex.get("status"), "trialOnly": True}
    else:
        source = None

    return {
        "cards": cards,
        "fixed": fixed if fixed.get("hasVersion") else None,
        "flex": flex,
        "source": source,
        "execution": {
            "dispatched": len(mes_rows), "completed": mes_done,
            "progressRate": mes_pct,
        },
        "conflicts": {"fixed": fixed_cf, "flex": flex_cf, "total": fixed_cf + flex_cf},
        "generatedAt": None,
    }


def _matrix_from_cards(
    columns: list[dict],
    metrics: list[tuple[str, str, bool]],
) -> dict:
    """metrics: (key, label, lower_is_better)。从 columns[].kpi 抽逐项表。"""
    rows = []
    for key, label, lower_better in metrics:
        values = []
        for col in columns:
            kpi = col.get("kpi") or col
            val = kpi.get(key)
            if key == "avgUtilization" and val is not None and val <= 1:
                val = round(val * 100, 1)
            values.append(val)
        numeric = [(i, v) for i, v in enumerate(values) if isinstance(v, (int, float))]
        best_idx = None
        if numeric:
            best_idx = (min if lower_better else max)(numeric, key=lambda x: x[1])[0]
        best_val = values[best_idx] if best_idx is not None else None
        deltas = []
        for v in values:
            if best_val is None or not isinstance(v, (int, float)):
                deltas.append(None)
            else:
                deltas.append(round(v - best_val, 2) if isinstance(best_val, float)
                              else v - best_val)
        rows.append({
            "metric": key, "label": label, "lowerIsBetter": lower_better,
            "values": values, "bestIdx": best_idx, "deltas": deltas,
        })
    return {"columns": columns, "rows": rows}


def matrix_from_fixed_cards(cards: list[dict], *, baseline: str | None = None) -> dict:
    cols = [{
        "id": c["strategy"], "label": c["label"], "strategy": c["strategy"],
        "kpi": c["kpi"], "diffVsBaseline": c.get("diffVsBaseline"),
        "risks": c.get("risks") or [],
    } for c in cards]
    metrics = [
        ("totalTardiness", "总延迟 (h)", True),
        ("conflictCount", "冲突数", True),
        ("avgUtilization", "利用率 (%)", False),
        ("totalCost", "预估成本", True),
        ("woCount", "工单数", True),
        ("poCount", "生产订单", True),
    ]
    section = _matrix_from_cards(cols, metrics)
    best = min(cards, key=lambda c: (c["kpi"]["totalTardiness"], c["kpi"]["conflictCount"]))
    section.update({
        "id": "fixed", "title": "固定产线 · 排产策略对比",
        "baseline": baseline,
        "recommendation": best["label"],
        "recommendationId": best["strategy"],
    })
    return section


def matrix_from_flex_rows(rows: list[dict], *, hint: str | None = None,
                          data_quality: dict | None = None,
                          due_basis: str | None = None) -> dict:
    cols = [{
        "id": r["sortMode"], "label": r["label"], "sortMode": r["sortMode"],
        "strategyStatus": str(r.get("strategyStatus") or "READY").upper(),
        "strategyEvidence": r.get("strategyEvidence") or [],
        "resultStatus": r.get("resultStatus"),
        "kpi": {
            "totalTardiness": r["totalTardiness"],
            "conflictCount": r["conflictCount"],
            "avgUtilization": r["avgUtilization"],
            "onTimeCount": r["onTimeCount"],
            "orderCount": r["orderCount"],
            "vlCount": r["vlCount"],
        },
    } for r in rows]
    metrics = [
        ("totalTardiness", "总延误（小时）", True),
        ("onTimeCount", "能按时交付的订单", False),
        ("orderCount", "订单总数", True),
        ("conflictCount", "需要处理的冲突", True),
        ("vlCount", "排产产线数", True),
        ("avgUtilization", "设备利用率 (%)", False),
    ]
    section = _matrix_from_cards(cols, metrics)
    quality = data_quality or {}
    if due_basis:
        section["dueBasis"] = due_basis
    production_ready = bool(quality.get("productionReady", True))
    ready_rows = [
        row for row in rows
        if str(row.get("strategyStatus") or "READY").upper() == "READY"
        and str(row.get("resultStatus") or "READY").upper() in {"READY", "WITH_CONFLICTS"}
    ]
    best = min(
        ready_rows,
        key=lambda r: (
            r["totalTardiness"], r["conflictCount"], -int(r.get("onTimeCount") or 0),
        ),
    ) if ready_rows else None
    if best is None:
        recommendation_status = "UNAVAILABLE"
        recommendation_reason = "没有 strategyStatus=READY 的策略，请先补齐策略输入数据后重新试排。"
    elif production_ready:
        recommendation_status = "READY"
        recommendation_reason = "策略输入与生产数据质量检查通过。"
    else:
        recommendation_status = "TRIAL_ONLY"
        warning_messages = [
            str(warning.get("message"))
            for warning in (quality.get("warnings") or [])
            if warning.get("message")
        ]
        recommendation_reason = "数据待补：" + (
            "；".join(warning_messages) if warning_messages else "生产数据质量尚未就绪"
        )
    section.update({
        "id": "flex", "title": "柔性排产 · 五种排序方式对比",
        "hint": hint,
        "dataQuality": quality,
        "productionReady": production_ready,
        "recommendationStatus": recommendation_status,
        "recommendationReason": recommendation_reason,
        "recommendation": best["label"] if best else None,
        "recommendationId": best["sortMode"] if best else None,
        "eligibleRecommendationIds": [row["sortMode"] for row in ready_rows],
    })
    return section


def build_compare_table(world: World, track: str = "both") -> dict:
    """EX-07：方案对比逐项 diff 表。track ∈ fixed|flex|both。"""
    from server.aps_domain.scenario import compare_scenarios
    from server.aps_domain.flex import compare_sort_modes
    from server.state.seed import ensure_flex_seed

    tr = (track or "both").lower()
    out: dict[str, Any] = {"track": tr, "sections": []}

    if tr in ("fixed", "both"):
        fixed_orders = len(world.get("productionOrders") or []) + len(world.get("workOrders") or [])
        if fixed_orders == 0:
            # 固定产线一张单都没排过，硬算只会得到一排 0，看起来像"策略都一样"。
            out["sections"].append({
                "id": "fixed", "title": "固定产线 · 排产策略对比",
                "unavailable": True,
                "unavailableReason": (
                    "这个项目还没有固定产线的生产订单和工单，无法做策略对比。"
                    "下方柔性排产对比使用的是已导入的柔性订单数据。"
                ),
                "columns": [], "rows": [],
            })
        else:
            _, block = compare_scenarios(world)
            cards = block.props.get("cards") or []
            out["sections"].append(matrix_from_fixed_cards(
                cards, baseline=block.props.get("baseline")))

    if tr in ("flex", "both"):
        ensure_flex_seed(world)

        class _Tmp:
            def __init__(self, data):
                self.data = data

        # 按订单真实交期试排（压缩交期只用于显式压测，不能当默认值展示）
        flex = compare_sort_modes(_Tmp(world), compress_due=False)
        out["sections"].append(matrix_from_flex_rows(
            flex["rows"], hint=flex.get("hint"), data_quality=flex.get("dataQuality"),
            due_basis=flex.get("dueBasis")))

    return out