"use client";

import { PROJECTS } from "@/data/content";
import { useStaggerReveal } from "@/hooks/useAnimations";
import React, { useState, useCallback } from 'react';   

import ProjectCard from "@/components/ProjectCard";

import { Layout, Responsive, useContainerWidth, horizontalCompactor, verticalCompactor, DefaultBreakpoints } from "react-grid-layout";

import "react-grid-layout/css/styles.css";
import "react-resizable/css/styles.css";

export default function Projects() {

  const rowHeight = 250;
  const defaultExpandedHeightUnits = 2;
  const visible = useStaggerReveal(PROJECTS.length, 100);
  const [selectedProject, setSelectedProject] = useState<number>(1);

  const { width, containerRef, mounted } = useContainerWidth();

  const [topCellHeight, setTopCellHeight] = useState(defaultExpandedHeightUnits);
  const [layouts, setLayouts] = useState<Record<DefaultBreakpoints, Layout>>(updateLayout(1));

  function setExpandedHeight(height: number) {
    const gridUnits = height === 0 ? defaultExpandedHeightUnits : Math.ceil(height / rowHeight);
    setTopCellHeight(gridUnits);
    setLayouts(updateLayout(selectedProject, gridUnits)); // pass both
  }

  function setSelectedHandler(projectId: number) {
    const id = Number(projectId);
    setSelectedProject(id);
    setLayouts(updateLayout(id, topCellHeight)); // pass both
  }

  function updateLayout(activeId: number, cellHeight?: number) : Record<DefaultBreakpoints, Layout> {     
    const currentSelected = activeId ?? selectedProject;
    const currentCellHeight = cellHeight ?? topCellHeight;
    let isSelected = (projectId: number) => projectId === currentSelected;
    return {
      "sm": PROJECTS.map((project, i) => {  
        return {
          i: project.id.toString(),
          x: isSelected(project.id) ? 0 : (i % 2) + 1,
          y: isSelected(project.id) ? 0 : Math.floor(i / 2) + (!isSelected(project.id) ? 1 : 0),
          w: isSelected(project.id) ? 2 : 1,
          h: project.images && project.images.length > 0 ? currentCellHeight : 1
        };
      }),
      "xs": PROJECTS.map((project, i) => {  
         return {
          i: project.id.toString(),
          x: 0,
          y: i,
          w: 2,
          h: project.images && project.images.length > 0 ? currentCellHeight : 1
        };
      }),
      "xxs": PROJECTS.map((project, i) => {  
          return {
          i: project.id.toString(),
          x: 0,
          y: i,
          w: 2,
          h: project.images && project.images.length > 0 ? currentCellHeight : 1
        };
      }),
      "md": PROJECTS.map((project, i) => {  
         return {
          i: project.id.toString(),
          x: isSelected(project.id) ? 0 : (i % 2) + 1,
          y: isSelected(project.id) ? 0 : Math.floor(i / 2) + (!isSelected(project.id) ? 1 : 0),
          w: isSelected(project.id) ? 2 : 1,
          h: project.images && project.images.length > 0 ? currentCellHeight : 1
        };
      }),
      "lg": PROJECTS.map((project, i) => {  
         return {
          i: project.id.toString(),
          x: isSelected(project.id) ? 0 : (i % 2) + 1,
          y: isSelected(project.id) ? 0 : Math.floor(i / 2) + (!isSelected(project.id) ? 1 : 0),
          w: isSelected(project.id) ? 2 : 1,
          h: project.images && project.images.length > 0 ? currentCellHeight : 1
        };
      }),
    }; 
    };    
  
  return (
    <div style={{ padding: "48px 0"}}>
      <div
        style={{
          marginBottom: 8,
          fontFamily: "var(--mono)",
          fontSize: 11,
          color: "var(--muted)",
          letterSpacing: "0.08em",
          textTransform: "uppercase",
        }}
      >
        {"# projects"}
      </div>
      <h2
        style={{
          fontFamily: "var(--sans)",
          fontSize: 28,
          fontWeight: 700,
          color: "var(--fg)",
          margin: "0 0 32px 0",
          letterSpacing: "-0.01em",
        }}
      >
        {"Things I've built"}
      </h2>
    
    <div ref={containerRef}>
      {mounted && (<Responsive
          layouts={layouts}          
          breakpoints={{ lg: 1200, md: 996, sm: 768, xs: 480, xxs: 0 }}
          cols={{ lg: 2, md: 2, sm: 2, xs: 2, xxs: 2 }}
          width={width}
          compactor={horizontalCompactor}
          rowHeight={rowHeight}
          dragConfig={{enabled:false}}
        >
        {PROJECTS.map((project, i) => (
          <div key={project.id} style={{pointerEvents: "none"}}>
          <ProjectCard        
            project={project}
            visible={visible.has(i)}
            selected={selectedProject === project.id}
            setSelected={setSelectedHandler}     
            setExpandedHeight={setExpandedHeight}    
          />
          </div>
         
        ))}
      </Responsive>)}
      
      </div>

    </div>
  );
}