import React, { useState } from "react";
import "../scss/components/_assignment.scss";
import { useEffect } from "react";


const AssignmentPage = () => {
  const [studentName, setStudentName] = useState("");
  const [campID, setCampID] = useState("");
  const [programID, setProgramID] = useState("");
  const [password, setPassword] = useState("");
  const [title, setTitle] = useState("");
  const [description, setDescription] = useState("");
  const [file, setFile] = useState(null);
  const [projects, setProjects] = useState([]);
  const [showModal, setShowModal] = useState(false);
  const [editingIndex, setEditingIndex] = useState(null);

  useEffect(() => {
    document.title = "Assignment";
  }, []);
  

  const resetForm = () => {
    setStudentName("");
    setCampID("");
    setProgramID("");
    setPassword("");
    setTitle("");
    setDescription("");
    setFile(null);
    setEditingIndex(null);
  };

  const handleSubmit = (e) => {
    e.preventDefault();

    const newProject = {
      studentName,
      campID,
      programID,
      title,
      description,
      fileName: file ? file.name : null,
    };

    if (editingIndex !== null) {
      const updatedProjects = [...projects];
      updatedProjects[editingIndex] = newProject;
      setProjects(updatedProjects);
    } else {
      setProjects([...projects, newProject]);
    }

    alert(editingIndex !== null ? "Assignment updated!" : "Assignment submitted!");
    resetForm();
    setShowModal(false);
  };

  const handleEdit = (index) => {
    const project = projects[index];
    setStudentName(project.studentName);
    setCampID(project.campID);
    setProgramID(project.programID);
    setTitle(project.title);
    setDescription(project.description);
    setFile(null);
    setEditingIndex(index);
    setShowModal(true);
  };

  const handleDelete = (index) => {
    const updated = projects.filter((_, i) => i !== index);
    setProjects(updated);
  };

  return (
    <div className="assignment-page">
      <div className="assignment-header-box">
        <h2>Assignments</h2>
        <button onClick={() => { resetForm(); setShowModal(true); }}>➕ Add New</button>
      </div>

      {showModal && (
        <div className="modal-overlay">
          <div className="modal">
            <h3>{editingIndex !== null ? "Edit Assignment" : "New Assignment"}</h3>
            <form onSubmit={handleSubmit}>
              <div>
                <label>Student Name</label>
                <input type="text" value={studentName} onChange={(e) => setStudentName(e.target.value)} required />
              </div>

              <div>
                <label>Camp ID</label>
                <input type="text" value={campID} onChange={(e) => setCampID(e.target.value)} required />
              </div>

              <div>
                <label>Program ID</label>
                <input type="text" value={programID} onChange={(e) => setProgramID(e.target.value)} required />
              </div>

              <div>
                <label>Password</label>
                <input type="password" value={password} onChange={(e) => setPassword(e.target.value)} required />
              </div>

              <div>
                <label>Assignment Title</label>
                <input type="text" value={title} onChange={(e) => setTitle(e.target.value)} required />
              </div>

              <div>
                <label>Description</label>
                <textarea value={description} onChange={(e) => setDescription(e.target.value)} required></textarea>
              </div>

              <div>
                <label>File Upload (optional)</label>
                <input type="file" onChange={(e) => setFile(e.target.files[0])} />
              </div>

              <div className="modal-buttons">
                <button type="submit">{editingIndex !== null ? "Update" : "Submit"}</button>
                <button type="button" onClick={() => { resetForm(); setShowModal(false); }}>Cancel</button>
              </div>
            </form>
          </div>
        </div>
      )}

      {projects.length > 0 && (
        <div className="project-list">
          {/* <h3>📋 Projects</h3> */}
          {projects.map((project, index) => (
            <div key={index} className="project-item">
              <div className="project-meta">
                <strong>Student Name: {project.studentName}</strong> | CampID: {project.campID} | ProgramID: {project.programID}
              </div>
              <h4>{project.title}</h4>
              <p>{project.description}</p>
              {project.fileName && <p><strong>Uploaded File:</strong> {project.fileName}</p>}

              <div className="action-buttons">
                <button onClick={() => handleEdit(index)}>✏️ Edit</button>
                <button onClick={() => handleDelete(index)}>🗑️ Delete</button>
                <button onClick={() => alert("QR feature coming soon!")}>📎 QR</button>
              </div>
            </div>
          ))}
        </div>
      )}
    </div>
  );
};

export default AssignmentPage;