import { For, Show, createMemo, createSignal, type Component } from 'solid-js';
import { Trash2, Plus, Settings2, Percent, DollarSign, ChevronDown, FileText, ClipboardList, FileBox } from 'lucide-solid';
import NumericInput from './ui/NumericInput';
import type { EstimateItem, Scope, SubScope, PricingType } from '../types';
import ItemRow from './ItemRow';
import SubScopeCard from './SubScopeCard';
import NoteEditor from './NoteEditor';
import LazyItem from './LazyItem';
import ScopeScaleWrapper from './ui/ScopeScaleWrapper';
import { ModifierRegistry } from '../utils/modifier-registry';

interface ScopeCardProps {
    scope: Scope;
    subScopes: SubScope[];
    items: EstimateItem[];
    onUpdateScope: (id: string, updates: Partial<Scope>) => void;
    onDeleteScope: (id: string) => void;
    onUpdateItem: (id: string, updates: Partial<EstimateItem>) => void;
    onDeleteItem: (id: string) => void;
    onAddSubScope: (scopeId: string) => void;
    onUpdateSubScope: (id: string, updates: Partial<SubScope>) => void;
    onDeleteSubScope: (id: string) => void;
    onDragStart: (e: DragEvent, id: string) => void;
    onDrop: (e: DragEvent, scopeId: string, subScopeId?: string) => void;
    onBulkUpdate: (scopeId: string, subScopeId: string | undefined, updates: { markup?: number, markupType?: PricingType, contingency?: number, contingencyType?: PricingType }) => void;
    onDuplicateItem: (id: string) => void;
    allScopes: Scope[];
    allSubScopes: SubScope[];
    onCopySubScopeItems: (sourceSubScopeId: string, targetSubScopeId: string) => void;
    onOpenApplyTemplate: (scopeId: string) => void;
    isSidebarCollapsed: () => boolean;
    selectedIds: string[];
    onToggleSelection: (id: string, isMulti: boolean, isShift: boolean) => void;
    onClearSelection: () => void;
    hideColumns?: boolean;
}


const ScopeCard: Component<ScopeCardProps> = (props) => {
    const [showBulkActions, setShowBulkActions] = createSignal(false);
    const [isCollapsed, setIsCollapsed] = createSignal(false);
    const [bulkMarkup, setBulkMarkup] = createSignal(0);
    const [bulkContingency, setBulkContingency] = createSignal(0);
    const [isOver, setIsOver] = createSignal(false);

    const scopeItems = createMemo(() => props.items.filter(i => !i.subScopeId));

    const totals = createMemo(() => {
        let subtotal = 0;
        let markup = 0;
        let contingency = 0;
        let totalQuantity = 0;

        props.items.forEach(item => {
            const base = item.quantity * item.unitPrice;
            subtotal += base;
            totalQuantity += item.quantity;
            markup += item.markupType === 'percent' ? base * (item.markup / 100) : item.markup;
            contingency += item.contingencyType === 'percent' ? base * (item.contingency / 100) : item.contingency;
        });

        // Add Management and Delivery
        const mgmtTotal = props.scope.useManagementLogic === 'percent'
            ? subtotal * (props.scope.managementFee / 100)
            : props.scope.managementFee;

        const deliveryTotal = props.scope.useDeliveryLogic === 'percent'
            ? subtotal * (props.scope.deliveryFee / 100)
            : props.scope.deliveryFee;

        let modifiersTotal = 0;
        props.subScopes.forEach(ss => {
            const ssItems = props.items.filter(i => i.subScopeId === ss.id);
            const ssTotalWithMarkup = ssItems.reduce((sum, item) => {
                const base = item.quantity * item.unitPrice;
                const markup = item.markupType === 'percent' ? base * (item.markup / 100) : item.markup;
                const contingency = item.contingencyType === 'percent' ? base * (item.contingency / 100) : item.contingency;
                return sum + base + markup + contingency;
            }, 0);

            (ss.modifiers || []).forEach(m => {
                if (!m.includeInTotal) return;
                modifiersTotal += ModifierRegistry.calculate(m, ssTotalWithMarkup, ssItems);
            });
        });

        return {
            subtotal,
            markup,
            contingency,
            mgmtTotal,
            deliveryTotal,
            modifiersTotal,
            totalQuantity,
            total: subtotal + markup + contingency + mgmtTotal + deliveryTotal + modifiersTotal
        };
    });

    const formatNumber = (num: number) => {
        return num.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
    };

    const formatQuantity = (num: number) => {
        return num.toLocaleString(undefined, { minimumFractionDigits: 0, maximumFractionDigits: 2 });
    };

    const handleDragOver = (e: DragEvent) => {
        e.preventDefault();
        e.dataTransfer!.dropEffect = 'move';
        setIsOver(true);
    };

    const handleDragLeave = () => {
        setIsOver(false);
    };

    return (
        <div
            onDragOver={handleDragOver}
            onDrop={(e) => {
                setIsOver(false);
                props.onDrop(e, props.scope.id);
            }}
            onDragLeave={handleDragLeave}
            class={`bg-muted/30 border rounded-3xl overflow-visible transition-all ring-1 ring-border/50 shadow-premium
                ${isOver() ? 'bg-primary/5 ring-4 ring-primary/10 border-primary' : 'border-border'}
            `}
        >
            {/* Scope Header - Rounded Top */}
            <div class="p-6 bg-card border-b border-border flex items-center justify-between rounded-t-3xl">
                <div class="flex items-center gap-4">
                    <button
                        onClick={() => setIsCollapsed(!isCollapsed())}
                        class="p-2 hover:bg-muted rounded-lg transition-colors text-muted-foreground group"
                    >
                        <ChevronDown class={`w-4 h-4 transition-transform duration-200 ${isCollapsed() ? '-rotate-90' : ''}`} />
                    </button>
                    <div class="flex flex-col">
                        <input
                            type="text"
                            value={props.scope.name}
                            onInput={(e) => props.onUpdateScope(props.scope.id, { name: e.currentTarget.value })}
                            class="text-xl font-black text-foreground bg-transparent border-none outline-none focus:ring-0 w-64"
                        />
                        <div class="flex items-center gap-2 text-xs text-muted-foreground font-bold uppercase tracking-wider">
                            <span>{props.items.length} Items</span>
                            <span>•</span>
                            <span>{formatQuantity(totals().totalQuantity)} Qty</span>
                            <span>•</span>
                            <span class="text-primary">${formatNumber(totals().total)} Total</span>
                        </div>
                    </div>
                </div>

                <div class="flex items-center gap-2">
                    <div class="flex items-center gap-1.5">
                        <button
                            onClick={() => props.onAddSubScope(props.scope.id)}
                            class="flex items-center gap-2 px-3 py-2 bg-primary/10 text-primary rounded-xl text-sm font-bold hover:bg-primary/20 transition-colors border border-primary/20"
                        >
                            <Plus class="h-3.5 w-3.5" /> Sub-scope
                        </button>
                        <button
                            onClick={() => props.onOpenApplyTemplate(props.scope.id)}
                            class="flex items-center gap-2 px-3 py-2 bg-indigo-50 text-indigo-600 rounded-xl text-sm font-bold hover:bg-indigo-100 transition-colors border border-indigo-100"
                        >
                            <FileBox class="h-3.5 w-3.5" /> Template
                        </button>
                    </div>
                    <div class="h-8 w-px bg-border mx-2"></div>
                    <button
                        onClick={() => setShowBulkActions(!showBulkActions())}
                        class="p-2 text-muted-foreground hover:text-foreground hover:bg-muted rounded-lg transition-all"
                    >
                        <Settings2 class="h-4 w-4" />
                    </button>
                    <button
                        onClick={() => props.onDeleteScope(props.scope.id)}
                        class="p-2 text-muted-foreground/40 hover:text-destructive hover:bg-destructive/10 rounded-lg transition-all"
                    >
                        <Trash2 class="h-4 w-4" />
                    </button>
                </div>
            </div>

            <Show when={!isCollapsed()}>
                <Show when={showBulkActions()}>
                    <div class="bg-primary/5 border-b border-primary/10 p-4 flex flex-wrap gap-4 items-center animate-in slide-in-from-top duration-300">
                        <span class="text-sm font-semibold text-primary">Bulk Adjust Scope:</span>
                        <div class="flex items-center gap-2">
                            <label class="text-xs text-primary/70">Markup %:</label>
                            <NumericInput
                                class="w-16 px-2 py-1 border border-primary/20 bg-background rounded text-sm focus:ring-2 focus:ring-primary outline-none"
                                value={bulkMarkup()}
                                onUpdate={(val) => setBulkMarkup(val)}
                            />
                            <button
                                onClick={() => props.onBulkUpdate(props.scope.id, undefined, { markup: bulkMarkup(), markupType: 'percent' })}
                                class="px-2 py-1 bg-primary text-primary-foreground text-xs rounded-lg font-bold hover:bg-primary/90"
                            >
                                Apply
                            </button>
                        </div>
                        <div class="flex items-center gap-2 border-l border-primary/20 pl-4">
                            <label class="text-xs text-primary/70">Contingency %:</label>
                            <NumericInput
                                class="w-16 px-2 py-1 border border-primary/20 bg-background rounded text-sm focus:ring-2 focus:ring-primary outline-none"
                                value={bulkContingency()}
                                onUpdate={(val) => setBulkContingency(val)}
                            />
                            <button
                                onClick={() => props.onBulkUpdate(props.scope.id, undefined, { contingency: bulkContingency(), contingencyType: 'percent' })}
                                class="px-2 py-1 bg-primary text-primary-foreground text-xs rounded-lg font-bold hover:bg-primary/90"
                            >
                                Apply
                            </button>
                        </div>
                    </div>
                </Show>

                <ScopeScaleWrapper>
                    {/* Sticky Column Headers */}
                    <div class="scope-sticky-header py-2 mb-2 hidden md:flex items-center gap-4 text-[10px] font-bold text-muted-foreground uppercase tracking-wider px-3">
                        <div class="w-4 shrink-0"></div> {/* Grip space */}
                        <div class="flex-1 min-w-[200px]">Description</div>
                        <div class="w-20 shrink-0 text-right">Qty</div>
                        <div class="w-24 shrink-0 text-right">Price</div>
                        <div class="w-24 shrink-0 text-right">Subtotal</div>
                        <Show when={props.isSidebarCollapsed() || !props.hideColumns}>
                            <div class="w-32 shrink-0 text-center">Markup</div>
                            <div class="w-32 shrink-0 text-center">Contingency</div>
                        </Show>
                        <div class="w-28 shrink-0 text-right">Total</div>
                        <div class="w-16 shrink-0"></div> {/* Action space */}
                    </div>

                    {/* Scope-level items */}
                    <div
                        onClick={(e) => { if (e.target === e.currentTarget) props.onClearSelection(); }}
                        class="px-3 pb-3 space-y-2"
                    >
                        <Show when={scopeItems().length > 0}>
                            <div class="grid gap-2">
                                <For each={props.items.filter(i => !i.subScopeId)}>
                                    {(item) => (
                                        <LazyItem estimatedHeight={60}>
                                            <ItemRow
                                                item={item}
                                                onUpdate={props.onUpdateItem}
                                                onDelete={props.onDeleteItem}
                                                onDragStart={props.onDragStart}
                                                onDuplicateItem={props.onDuplicateItem}
                                                isSidebarCollapsed={props.isSidebarCollapsed}
                                                isSelected={props.selectedIds.includes(item.id)}
                                                anySelected={props.selectedIds.length > 0}
                                                onToggleSelection={props.onToggleSelection}
                                                hideColumns={props.hideColumns}
                                            />
                                        </LazyItem>
                                    )}
                                </For>
                            </div>
                        </Show>

                        <Show when={scopeItems().length === 0 && props.subScopes.length === 0}>
                            <div class="text-center py-8 text-muted-foreground/50 italic text-sm">
                                Empty scope. Drag items here or add sub-scopes.
                            </div>
                        </Show>
                    </div>

                    {/* Sub-scopes — rendered inside the same scale wrapper so they zoom together */}
                    <div class="px-3 pb-3 space-y-4">
                        <For each={props.subScopes}>
                            {(subScope) => (
                                <SubScopeCard
                                    subScope={subScope}
                                    items={props.items.filter(i => i.subScopeId === subScope.id)}
                                    onUpdateSubScope={props.onUpdateSubScope}
                                    onUpdateItem={props.onUpdateItem}
                                    onDeleteItem={props.onDeleteItem}
                                    onDeleteSubScope={props.onDeleteSubScope}
                                    onDragStart={props.onDragStart}
                                    onDrop={(e, sid, ssid) => props.onDrop(e, sid, ssid)}
                                    onDuplicateItem={props.onDuplicateItem}
                                    allScopes={props.allScopes}
                                    allSubScopes={props.allSubScopes}
                                    onCopySubScopeItems={props.onCopySubScopeItems}
                                    isSidebarCollapsed={props.isSidebarCollapsed}
                                    selectedIds={props.selectedIds}
                                    onToggleSelection={props.onToggleSelection}
                                    onClearSelection={props.onClearSelection}
                                    hideColumns={props.hideColumns}
                                />
                            )}
                        </For>
                    </div>
                </ScopeScaleWrapper>

                <div class="p-6 pt-4 space-y-4">
                    {/* Scope Extras & Totals */}
                    <div class="mt-4 pt-6 border-t border-border space-y-3">
                        {/* Management Line */}
                        <div class="flex items-center justify-between group">
                            <div class="flex items-center gap-3">
                                <span class="text-sm font-medium text-muted-foreground">Management Fee</span>
                                <div class="flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity">
                                    <button
                                        onClick={() => props.onUpdateScope(props.scope.id, { useManagementLogic: 'percent' })}
                                        class={`p-1 rounded-md transition-colors ${props.scope.useManagementLogic === 'percent' ? 'bg-primary/10 text-primary' : 'hover:bg-muted'}`}
                                    >
                                        <Percent class="w-3 h-3" />
                                    </button>
                                    <button
                                        onClick={() => props.onUpdateScope(props.scope.id, {
                                            useManagementLogic: 'simple',
                                            managementFee: (props.scope.managementFeeQuantity || 0) * (props.scope.managementFeeRate || 0)
                                        })}
                                        class={`p-1 rounded-md transition-colors ${props.scope.useManagementLogic === 'simple' ? 'bg-primary/10 text-primary' : 'hover:bg-muted'}`}
                                    >
                                        <DollarSign class="w-3 h-3" />
                                    </button>
                                </div>
                            </div>
                        <div class="flex items-center gap-4">
                            {props.scope.useManagementLogic === 'percent' ? (
                                <NumericInput
                                    value={props.scope.managementFee}
                                    onUpdate={(val) => props.onUpdateScope(props.scope.id, { managementFee: val })}
                                    class="w-20 text-right text-sm border-b border-dashed border-border focus:border-primary outline-none bg-transparent"
                                />
                            ) : (
                                <div class="flex items-center gap-3">
                                    <div class="flex flex-col items-end gap-0.5 text-[9px] font-black tracking-[0.3em] text-muted-foreground uppercase">
                                        <span>Qty</span>
                                    <NumericInput
                                        value={props.scope.managementFeeQuantity}
                                        onUpdate={(val) => {
                                            const qty = val;
                                            const rate = props.scope.managementFeeRate || 0;
                                            props.onUpdateScope(props.scope.id, {
                                                managementFeeQuantity: qty,
                                                managementFee: qty * rate
                                            });
                                        }}
                                        class="w-16 text-right text-sm border-b border-dashed border-border focus:border-primary outline-none bg-transparent"
                                    />
                                    </div>
                                    <span class="text-xs font-black text-muted-foreground/70">×</span>
                                    <div class="flex flex-col items-end gap-0.5 text-[9px] font-black tracking-[0.3em] text-muted-foreground uppercase">
                                        <span>Rate</span>
                                            <div class="flex items-center gap-1">
                                                <span class="text-[10px] font-black text-muted-foreground">$</span>
                                                <NumericInput
                                                    value={props.scope.managementFeeRate}
                                                    onUpdate={(val) => {
                                                        const rate = val;
                                                        const qty = props.scope.managementFeeQuantity || 0;
                                                        props.onUpdateScope(props.scope.id, {
                                                            managementFeeRate: rate,
                                                            managementFee: qty * rate
                                                        });
                                                    }}
                                                    class="w-20 text-right text-sm border-b border-dashed border-border focus:border-primary outline-none bg-transparent"
                                                />
                                            </div>
                                    </div>
                                </div>
                            )}
                            <span class="w-28 text-right text-foreground font-medium">${formatNumber(totals().mgmtTotal)}</span>
                        </div>
                        </div>

                        {/* Delivery Fee */}
                        <div class="flex items-center justify-between group">
                            <div class="flex items-center gap-3">
                                <span class="text-sm font-medium text-muted-foreground">Delivery Fee</span>
                                <div class="flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity">
                                    <button
                                        onClick={() => props.onUpdateScope(props.scope.id, { useDeliveryLogic: 'percent' })}
                                        class={`p-1 rounded-md transition-colors ${props.scope.useDeliveryLogic === 'percent' ? 'bg-primary/10 text-primary' : 'hover:bg-muted'}`}
                                    >
                                        <Percent class="w-3 h-3" />
                                    </button>
                                    <button
                                        onClick={() => props.onUpdateScope(props.scope.id, {
                                            useDeliveryLogic: 'simple',
                                            deliveryFee: (props.scope.deliveryFeeQuantity || 0) * (props.scope.deliveryFeeRate || 0)
                                        })}
                                        class={`p-1 rounded-md transition-colors ${props.scope.useDeliveryLogic === 'simple' ? 'bg-primary/10 text-primary' : 'hover:bg-muted'}`}
                                    >
                                        <DollarSign class="w-3 h-3" />
                                    </button>
                                </div>
                            </div>
                        <div class="flex items-center gap-4">
                            {props.scope.useDeliveryLogic === 'percent' ? (
                                <NumericInput
                                    value={props.scope.deliveryFee}
                                    onUpdate={(val) => props.onUpdateScope(props.scope.id, { deliveryFee: val })}
                                    class="w-20 text-right text-sm border-b border-dashed border-border focus:border-primary outline-none bg-transparent"
                                />
                            ) : (
                                <div class="flex items-center gap-3">
                                    <div class="flex flex-col items-end gap-0.5 text-[9px] font-black tracking-[0.3em] text-muted-foreground uppercase">
                                        <span>Qty</span>
                                    <NumericInput
                                        value={props.scope.deliveryFeeQuantity}
                                        onUpdate={(val) => {
                                            const qty = val;
                                            const rate = props.scope.deliveryFeeRate || 0;
                                            props.onUpdateScope(props.scope.id, {
                                                deliveryFeeQuantity: qty,
                                                deliveryFee: qty * rate
                                            });
                                        }}
                                        class="w-16 text-right text-sm border-b border-dashed border-border focus:border-primary outline-none bg-transparent"
                                    />
                                    </div>
                                    <span class="text-xs font-black text-muted-foreground/70">×</span>
                                    <div class="flex flex-col items-end gap-0.5 text-[9px] font-black tracking-[0.3em] text-muted-foreground uppercase">
                                        <span>Rate</span>
                                            <div class="flex items-center gap-1">
                                                <span class="text-[10px] font-black text-muted-foreground">$</span>
                                                <NumericInput
                                                    value={props.scope.deliveryFeeRate}
                                                    onUpdate={(val) => {
                                                        const rate = val;
                                                        const qty = props.scope.deliveryFeeQuantity || 0;
                                                        props.onUpdateScope(props.scope.id, {
                                                            deliveryFeeRate: rate,
                                                            deliveryFee: qty * rate
                                                        });
                                                    }}
                                                    class="w-20 text-right text-sm border-b border-dashed border-border focus:border-primary outline-none bg-transparent"
                                                />
                                            </div>
                                    </div>
                                </div>
                            )}
                            <span class="w-28 text-right text-foreground font-medium">${formatNumber(totals().deliveryTotal)}</span>
                        </div>
                        </div>

                        {/* Scope Notes Section */}
                        <div class="grid grid-cols-1 lg:grid-cols-2 gap-6 pt-8 border-t border-border">
                            <NoteEditor
                                label="Estimator's Notes"
                                value={props.scope.estimatorNotes || ''}
                                onUpdate={(val) => props.onUpdateScope(props.scope.id, { estimatorNotes: val })}
                                icon={ClipboardList}
                                highlight={props.scope.estimatorNotes?.includes('#')}
                            />
                            <NoteEditor
                                label="Scope Description (Appears on Finale Estimate)"
                                value={props.scope.bidDescription || ''}
                                onUpdate={(val) => props.onUpdateScope(props.scope.id, { bidDescription: val })}
                                icon={FileText}
                                highlight={props.scope.bidDescription?.includes('#')}
                            />
                        </div>

                        {/* Scope Totals Breakdown */}
                        <div class="space-y-1 text-sm pt-4">
                            <div class="flex justify-end gap-8 text-muted-foreground italic">
                                <span>Scope Subtotal:</span>
                                <span class="w-28 text-right">${formatNumber(totals().subtotal)}</span>
                            </div>
                            <div class="flex justify-end gap-8 text-muted-foreground italic">
                                <span>Scope Total Quantity:</span>
                                <span class="w-28 text-right">{formatQuantity(totals().totalQuantity)}</span>
                            </div>
                            <div class="flex justify-end gap-8 text-primary">
                                <span>Scope Markup:</span>
                                <span class="w-28 text-right">${formatNumber(totals().markup)}</span>
                            </div>
                            <div class="flex justify-end gap-8 text-orange-600">
                                <span>Scope Contingency:</span>
                                <span class="w-28 text-right">${formatNumber(totals().contingency)}</span>
                            </div>
                            <Show when={totals().modifiersTotal !== 0}>
                                <div class="flex justify-end gap-8 text-indigo-600">
                                    <span>Scope Modifiers:</span>
                                    <span class="w-28 text-right">${formatNumber(totals().modifiersTotal)}</span>
                                </div>
                            </Show>
                            <div class="flex justify-end gap-8 font-black text-foreground text-xl mt-4">
                                <span>Scope Grand Total:</span>
                                <span class="w-32 text-right border-t-2 border-foreground pt-1">
                                    ${formatNumber(totals().total)}
                                </span>
                            </div>
                        </div>
                    </div>
                </div>
            </Show>
        </div>
    );
};

export default ScopeCard;