"use client";

import React from "react";
import { AlertCircleIcon } from "lucide-react";

import { SEARCH_SCOPE } from "@/lib/frontend/search/urlState";

import SearchQueryBox from "@/components/search/form/SearchQueryBox";
import SearchScopeSelect from "@/components/search/form/SearchScopeSelect";
import SearchLimitSelect from "@/components/search/form/SearchLimitSelect";
import SearchSingleBranchCombobox from "@/components/search/form/SearchSingleBranchCombobox";
import SearchMultiBranchPicker from "@/components/search/form/SearchMultiBranchPicker";
import SearchDateRangePicker from "@/components/search/form/SearchDateRangePicker";
import SearchDateFilterChip from "@/components/search/form/SearchDateFilterChip";

import { Alert, AlertTitle, AlertDescription } from "@/components/ui/alert";

export default function SearchForm({
	branch,
	qDraft,
	onQDraftChange,
	onSubmit,
	currentQuery,
	isSubmitting,
	isAdminDev,
	scope,
	onScopeChange,
	onSingleBranchChange,
	availableBranches,
	branchesStatus,
	selectedBranches,
	onToggleBranch,
	onClearAllBranches,
	limit,
	onLimitChange,
	from,
	to,
	onDateRangeChange,
	validationError,
}) {
	const canSearch = typeof qDraft === "string" && qDraft.trim().length > 0;

	// SINGLE scope (admin/dev only) shows an extra branch combobox.
	const showSingleBranchCombobox = Boolean(
		isAdminDev && scope === SEARCH_SCOPE.SINGLE
	);

	const hasDateFilter = Boolean(from || to);

	return (
		<div className="space-y-4">
			<form
				onSubmit={(e) => {
					e.preventDefault();
					if (!canSearch) return;
					onSubmit();
				}}
				className="space-y-4"
			>
				{/* Row 1: query full-width */}
				<div className="w-full">
					<SearchQueryBox
						qDraft={qDraft}
						onQDraftChange={onQDraftChange}
						onSubmit={onSubmit}
						currentQuery={currentQuery}
						isSubmitting={isSubmitting}
						canSearch={canSearch}
					/>
				</div>

				{/* Row 2: left controls + spacer + limit on the right */}
				<div className="flex flex-col gap-3 sm:flex-row sm:items-end sm:justify-between">
					{/* Left group: scope (+ optional single branch combobox) + date range */}
					<div className="flex flex-col gap-3 sm:flex-row sm:items-end">
						{isAdminDev ? (
							<div className="flex items-end gap-3">
								<SearchScopeSelect
									branch={branch}
									scope={scope}
									onScopeChange={onScopeChange}
									isSubmitting={isSubmitting}
								/>

								{/* Animated presence (kept for smoothness when SINGLE shows the extra combobox) */}
								<div
									className={[
										"overflow-hidden transition-all duration-200 ease-in-out",
										showSingleBranchCombobox
											? "max-w-44 max-h-24 opacity-100"
											: "max-w-0 max-h-0 opacity-0 pointer-events-none",
									].join(" ")}
									aria-hidden={showSingleBranchCombobox ? "false" : "true"}
								>
									<SearchSingleBranchCombobox
										branch={branch}
										branchesStatus={branchesStatus}
										availableBranches={availableBranches}
										onSingleBranchChange={onSingleBranchChange}
										isSubmitting={isSubmitting || !showSingleBranchCombobox}
									/>
								</div>
							</div>
						) : null}

						<div className="shrink-0 flex items-end gap-4">
							<SearchDateRangePicker
								from={from}
								to={to}
								onDateRangeChange={onDateRangeChange}
								isSubmitting={isSubmitting}
							/>

							{/* Active date filter chip (quick clear) */}
							{hasDateFilter ? (
								<div className="flex flex-wrap items-center gap-2 mb-2">
									<span className="text-xs text-muted-foreground">
										Aktive Filter:
									</span>

									<SearchDateFilterChip
										from={from}
										to={to}
										isSubmitting={isSubmitting}
										onClear={() => {
											if (typeof onDateRangeChange !== "function") return;
											onDateRangeChange({ from: null, to: null });
										}}
									/>
								</div>
							) : null}
						</div>
					</div>

					{/* Right group: limit aligned right */}
					<div className="shrink-0">
						<SearchLimitSelect
							limit={limit}
							onLimitChange={onLimitChange}
							isSubmitting={isSubmitting}
						/>
					</div>
				</div>
			</form>

			{/* Validation feedback belongs near the inputs (not in results). */}
			{validationError ? (
				<Alert variant="destructive">
					<AlertCircleIcon />
					<AlertTitle>{validationError.title}</AlertTitle>
					<AlertDescription>{validationError.description}</AlertDescription>
				</Alert>
			) : null}

			{/* Multi scope branch picker remains below */}
			{isAdminDev && scope === SEARCH_SCOPE.MULTI ? (
				<SearchMultiBranchPicker
					branchesStatus={branchesStatus}
					availableBranches={availableBranches}
					selectedBranches={selectedBranches}
					onToggleBranch={onToggleBranch}
					onClearAllBranches={onClearAllBranches}
					isSubmitting={isSubmitting}
				/>
			) : null}
		</div>
	);
}