"use client";

import { useState, useEffect } from "react";
import Button from "./ui/Button";
import Badge from "./ui/Badge";
import { useTranslation } from "@/lib/i18n";

export default function ProjectTaskForm({ projectId, onTaskAdded }) {
	const { t } = useTranslation();
	const [taskTemplates, setTaskTemplates] = useState([]);
	const [users, setUsers] = useState([]);
	const [taskType, setTaskType] = useState("template"); // "template" or "custom"
	const [selectedTemplate, setSelectedTemplate] = useState("");
	const [customTaskName, setCustomTaskName] = useState("");
	const [customMaxWaitDays, setCustomMaxWaitDays] = useState("");
	const [customDescription, setCustomDescription] = useState("");
	const [priority, setPriority] = useState("normal");
	const [assignedTo, setAssignedTo] = useState("");
	const [isSubmitting, setIsSubmitting] = useState(false);

	useEffect(() => {
		// Fetch available task templates
		fetch("/api/tasks/templates")
			.then((res) => res.json())
			.then(setTaskTemplates);

		// Fetch users for assignment
		fetch("/api/project-tasks/users")
			.then((res) => res.json())
			.then(setUsers);
	}, []);

	async function handleSubmit(e) {
		e.preventDefault();

		// Validate based on task type
		if (taskType === "template" && !selectedTemplate) return;
		if (taskType === "custom" && !customTaskName.trim()) return;

		setIsSubmitting(true);

		try {
			const requestData = {
				project_id: parseInt(projectId),
				priority,
				assigned_to: assignedTo || null,
			};

			if (taskType === "template") {
				requestData.task_template_id = parseInt(selectedTemplate);
			} else {
				requestData.custom_task_name = customTaskName.trim();
				requestData.custom_max_wait_days = parseInt(customMaxWaitDays) || 0;
				requestData.custom_description = customDescription.trim();
			}

			const res = await fetch("/api/project-tasks", {
				method: "POST",
				headers: { "Content-Type": "application/json" },
				body: JSON.stringify(requestData),
			});
			if (res.ok) {
				// Reset form
				setSelectedTemplate("");
				setCustomTaskName("");
				setCustomMaxWaitDays("");
				setCustomDescription("");
				setPriority("normal");
				setAssignedTo("");
				if (onTaskAdded) onTaskAdded();
			} else {
				alert(t("tasks.addTaskError"));
			}
		} catch (error) {
			alert(t("tasks.addTaskError"));
		} finally {
			setIsSubmitting(false);
		}
	}
	return (
		<form onSubmit={handleSubmit} className="space-y-6">
			<div>
				<label className="block text-sm font-medium text-gray-700 mb-3">
					{t("tasks.taskType")}
				</label>
				<div className="flex space-x-6">
					<label className="flex items-center">
						<input
							type="radio"
							value="template"
							checked={taskType === "template"}
							onChange={(e) => setTaskType(e.target.value)}
							className="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300"
						/>
						<span className="ml-2 text-sm text-gray-900">{t("tasks.fromTemplate")}</span>
					</label>
					<label className="flex items-center">
						<input
							type="radio"
							value="custom"
							checked={taskType === "custom"}
							onChange={(e) => setTaskType(e.target.value)}
							className="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300"
						/>
						<span className="ml-2 text-sm text-gray-900">{t("tasks.customTask")}</span>
					</label>
				</div>
			</div>

			{taskType === "template" ? (
				<div>
					<label className="block text-sm font-medium text-gray-700 mb-2">
						{t("tasks.selectTemplate")}
					</label>{" "}
					<select
						value={selectedTemplate}
						onChange={(e) => setSelectedTemplate(e.target.value)}
						className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
						required
					>
						<option value="">{t("tasks.chooseTemplate")}</option>
						{taskTemplates.map((template) => (
							<option key={template.task_id} value={template.task_id}>
								{template.name} ({template.max_wait_days} {t("tasks.days")})
							</option>
						))}
					</select>
				</div>
			) : (
				<div className="space-y-4">
					<div>
						<label className="block text-sm font-medium text-gray-700 mb-2">
							{t("tasks.taskName")}
						</label>
						<input
							type="text"
							value={customTaskName}
							onChange={(e) => setCustomTaskName(e.target.value)}
							className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
							placeholder={t("tasks.enterTaskName")}
							required
						/>
					</div>
					<div>
						<label className="block text-sm font-medium text-gray-700 mb-2">
							{t("tasks.maxWait")}
						</label>
						<input
							type="number"
							value={customMaxWaitDays}
							onChange={(e) => setCustomMaxWaitDays(e.target.value)}
							className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
							placeholder="0"
							min="0"
						/>
					</div>
					<div>
						<label className="block text-sm font-medium text-gray-700 mb-2">
							{t("tasks.description")}
						</label>
						<textarea
							value={customDescription}
							onChange={(e) => setCustomDescription(e.target.value)}
							className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
							placeholder={t("tasks.enterDescription")}
							rows={3}
						/>
					</div>
				</div>
			)}

			<div>
				<label className="block text-sm font-medium text-gray-700 mb-2">
					{t("tasks.assignedTo")} <span className="text-gray-500 text-xs">({t("common.optional")})</span>
				</label>
				<select
					value={assignedTo}
					onChange={(e) => setAssignedTo(e.target.value)}
					className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
				>
					<option value="">{t("projects.unassigned")}</option>
					{users.map((user) => (
						<option key={user.id} value={user.id}>
							{user.name} ({user.email})
						</option>
					))}
				</select>
			</div>

			<div>
				<label className="block text-sm font-medium text-gray-700 mb-2">
					{t("tasks.priority")}
				</label>
				<select
					value={priority}
					onChange={(e) => setPriority(e.target.value)}
					className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
				>
					<option value="low">{t("tasks.low")}</option>
					<option value="normal">{t("tasks.normal")}</option>
					<option value="high">{t("tasks.high")}</option>
					<option value="urgent">{t("tasks.urgent")}</option>
				</select>
			</div>

			<div className="flex justify-end">
				<Button
					type="submit"
					variant="primary"
					disabled={
						isSubmitting ||
						(taskType === "template" && !selectedTemplate) ||
						(taskType === "custom" && !customTaskName.trim())
					}
				>
					{isSubmitting ? t("tasks.adding") : t("tasks.addTask")}
				</Button>
			</div>
		</form>
	);
}