"use client";
import React, { createContext, useCallback, useContext, useEffect, useState } from "react";
import { useSession } from "next-auth/react";
import { config, NETWORK_NAME, setMapWorkspace, setNetworkName, setMapExtent } from "@/config/config";
import { ProjectSelector } from "@/components/project/ProjectSelector";
import { apiFetch } from "@/lib/apiFetch";
import { useProjectStore } from "@/store/projectStore";

interface ProjectContextType {
  workspace: string;
  networkName: string;
  extent: number[];
}

const ProjectContext = createContext<ProjectContextType | undefined>(undefined);

export const ProjectProvider: React.FC<{ children: React.ReactNode }> = ({
  children,
}) => {
  const { status } = useSession();
  const [isConfigured, setIsConfigured] = useState(false);
  const setCurrentProjectId = useProjectStore(
    (state) => state.setCurrentProjectId,
  );
  const [currentProject, setCurrentProject] = useState({
    workspace: config.MAP_WORKSPACE,
    networkName: NETWORK_NAME || "tjwater",
    extent: config.MAP_EXTENT,
  });

  const applyConfig = useCallback(async (
    projectId: string,
    ws: string,
    net: string,
    extent: number[],
  ) => {
    const resolvedProjectId = projectId || net || ws;
    setMapWorkspace(ws);
    setNetworkName(net);
    setMapExtent(extent);
    localStorage.setItem("NEXT_PUBLIC_MAP_EXTENT", extent.join(","));
    // Reset extent cache
    localStorage.removeItem(`${ws}_map_view`);
    setCurrentProject({ workspace: ws, networkName: net, extent: extent });
    setCurrentProjectId(resolvedProjectId);

    // Save to localStorage
    localStorage.setItem("NEXT_PUBLIC_MAP_WORKSPACE", ws);
    localStorage.setItem("NEXT_PUBLIC_NETWORK_NAME", net);

    setIsConfigured(true);

    try {
      const response = await apiFetch(
        `${config.BACKEND_URL}/openproject/?network=${net}`,
        {
          method: "POST",
        },
      );
      if (!response.ok) {
        throw new Error(`HTTP ${response.status}`);
      }
      const data = await response.json();
      const bbox = Array.isArray(data?.map_extent?.bbox)
        ? data.map_extent.bbox.map((value: number) => Number(value))
        : null;
      if (bbox && bbox.length === 4) {
        setMapExtent(bbox);
        localStorage.setItem("NEXT_PUBLIC_MAP_EXTENT", bbox.join(","));
        localStorage.removeItem(`${ws}_map_view`);
        setCurrentProject((prev) => ({ ...prev, extent: bbox }));
      }
    } catch (error) {
      console.error("Failed to open project:", error);
    }
  }, [setCurrentProjectId]);

  useEffect(() => {
    // Check localStorage
    const savedWorkspace = localStorage.getItem("NEXT_PUBLIC_MAP_WORKSPACE");
    const savedNetwork = localStorage.getItem("NEXT_PUBLIC_NETWORK_NAME");
    const savedExtent = localStorage.getItem("NEXT_PUBLIC_MAP_EXTENT");
    const savedProjectId = localStorage.getItem("active_project");

    // If we have saved config, use it.
    if (savedWorkspace && savedNetwork) {
      applyConfig(
        savedProjectId || savedNetwork || savedWorkspace,
        savedWorkspace,
        savedNetwork,
        savedExtent ? savedExtent.split(",").map(Number) : config.MAP_EXTENT,
      );
    }
  }, [applyConfig]);

  // Only show selector if authenticated and not configured
  if (status === "authenticated" && !isConfigured) {
    return (
      <ProjectSelector
        open={true}
        onSelect={(projectId, ws, net, extent) =>
          applyConfig(projectId, ws, net, extent)
        }
      />
    );
  }

  return (
    <ProjectContext.Provider value={currentProject}>
      {children}
    </ProjectContext.Provider>
  );
};

export const useProject = () => useContext(ProjectContext);