"use client";

import { useMemo, useState } from "react";
import useSWR from "swr";
import Map from "@components/Map";
import Sidebar from "@components/Sidebar";
import { createPoster } from "@utils/axiosHelpers";
import { Earthquake } from "@prismaclient";
import { getRelativeDate } from "@utils/formatters";
import GeologicalEvent from "@appTypes/Event";
import axios from "axios";

// --- SEARCH MODAL COMPONENT ---
function EarthquakeSearchModal({ open, onClose, onSelect }) {
  const [search, setSearch] = useState("");
  const [results, setResults] = useState([]);
  const [loading, setLoading] = useState(false);

  const handleSearch = async (e) => {
    e.preventDefault();
    setLoading(true);
    setResults([]);
    try {
      const res = await axios.post("/api/earthquakes/search", { query: search });
      setResults(res.data.earthquakes || []);
    } catch (e) {
      alert("Failed to search.");
    }
    setLoading(false);
  };

  if (!open) return null;
  return (
    <div className="fixed z-50 inset-0 bg-black/40 flex items-center justify-center">
      <div className="bg-white rounded-lg shadow-lg p-6 max-w-lg w-full relative">
        <button
          onClick={onClose}
          className="absolute right-4 top-4 text-gray-500 hover:text-black text-lg"
        >
          &times;
        </button>
        <h2 className="font-bold text-xl mb-4">Search Earthquakes</h2>
        <form onSubmit={handleSearch} className="flex gap-2 mb-4">
          <input
            type="text"
            placeholder="e.g. Mexico, EV-7.4-Mexico-00035"
            value={search}
            onChange={e => setSearch(e.target.value)}
            className="flex-grow px-3 py-2 border rounded"
            required
          />
          <button
            type="submit"
            className="bg-blue-600 text-white px-4 py-2 rounded hover:bg-blue-700"
          >
            {loading ? "Searching..." : "Search"}
          </button>
        </form>
        <div>
          {results.length === 0 && !loading && search !== "" && (
            <p className="text-gray-400 text-sm">No results found.</p>
          )}
          <ul>
            {results.map(eq => (
              <li
                key={eq.id}
                className="border-b py-2 cursor-pointer hover:bg-gray-50 flex items-center justify-between"
                onClick={() => { onSelect(eq); onClose(); }}
                tabIndex={0}
              >
                <div>
                  <strong>{eq.code}</strong> {" "}
                  <span>{eq.location}</span> <span className="text-xs text-gray-500">{new Date(eq.date).toLocaleDateString()}</span>
                </div>
                <div className={`rounded-full px-2 py-1 ml-2 text-white font-semibold ${eq.magnitude >= 7 ? "bg-red-500" : eq.magnitude >= 6 ? "bg-orange-400" : "bg-yellow-400"}`}>
                  {eq.magnitude}
                </div>
              </li>
            ))}
          </ul>
        </div>
      </div>
    </div>
  );
}

// --- MAIN PAGE COMPONENT ---
export default function Earthquakes() {
  const [selectedEventId, setSelectedEventId] = useState("");
  const [hoveredEventId, setHoveredEventId] = useState("");

  // Search modal state
  const [searchModalOpen, setSearchModalOpen] = useState(false);

  // Fetch recent earthquakes as before
  const { data, error, isLoading } = useSWR("/api/earthquakes", createPoster({ rangeDaysPrev: 5 }));

  // Prepare events for maps/sidebar
  const earthquakeEvents = useMemo(
    () =>
      data && data.earthquakes
        ? data.earthquakes
            .map(
              (x: Earthquake): GeologicalEvent => ({
                id: x.code,
                title: `Earthquake in ${x.code.split("-")[2]}`,
                magnitude: x.magnitude,
                longitude: x.longitude,
                latitude: x.latitude,
                text1: "",
                text2: getRelativeDate(x.date),
                date: x.date,
              })
            )
            .sort((a: GeologicalEvent, b: GeologicalEvent) => new Date(b.date).getTime() - new Date(a.date).getTime())
        : [],
    [data]
  );

  // Optional: show details of selected search result (not implemented here)
  // const [selectedSearchResult, setSelectedSearchResult] = useState(null);

  return (
    <div className="flex h-[calc(100vh-3.5rem)] w-full overflow-hidden">
      <div className="flex-grow h-full">
        <Map
          events={earthquakeEvents}
          selectedEventId={selectedEventId}
          setSelectedEventId={setSelectedEventId}
          hoveredEventId={hoveredEventId}
          setHoveredEventId={setHoveredEventId}
          mapType="Earthquakes"
        />
      </div>
      <Sidebar
        logTitle="Log an Earthquake"
        logSubtitle="Record new earthquakes - time/date, location, magnitude, observatory and scientists"
        recentsTitle="Recent Earthquakes"
        events={earthquakeEvents}
        selectedEventId={selectedEventId}
        setSelectedEventId={setSelectedEventId}
        hoveredEventId={hoveredEventId}
        setHoveredEventId={setHoveredEventId}
        button1Name="Log an Earthquake"
        button2Name="Search Earthquakes"
        onButton2Click={() => setSearchModalOpen(true)} // <-- important!
      />
      <EarthquakeSearchModal
        open={searchModalOpen}
        onClose={() => setSearchModalOpen(false)}
        onSelect={eq => {
          setSelectedEventId(eq.code); // select on map/sidebar
          // setSelectedSearchResult(eq); // you can use this if you want to show detail modal
        }}
      />
    </div>
  );
}