// CareerProfileForm.js
import React, { useEffect, useState } from 'react';
import { useNavigate, useParams } from 'react-router-dom';
import authFetch     from '../utils/authFetch.js';
import CareerSearch  from './CareerSearch.js';        // ← same component as onboarding

export default function CareerProfileForm() {
  const { id }  = useParams();      // "new" or an existing uuid
  const nav     = useNavigate();

  /* ---------- 1. local state ---------- */
  const [form, setForm] = useState({
    scenario_title                    : '',
    career_name                       : '',
    soc_code                          : '',
    status                            : 'current',
    start_date                        : '',
    retirement_start_date             : '',
    college_enrollment_status         : '',
    career_goals                      : '',
    desired_retirement_income_monthly : ''
  });

  const [careerLocked, setCareerLocked] = useState(id !== 'new');   // lock unless new

  /* ---------- 2. helpers ---------- */
  const handleChange = e =>
    setForm(prev => ({ ...prev, [e.target.name]: e.target.value }));

  const handleCareerSelected = obj => {
    // obj = { title, soc_code, … }
    setForm(prev => ({
      ...prev,
      career_name : obj.title,
      soc_code    : obj.soc_code
    }));
    setCareerLocked(true);
  };

  const unlockCareer = () => {
    // allow user to re‑pick
    setCareerLocked(false);
    setForm(prev => ({ ...prev, career_name: '', soc_code: '' }));
  };

  /* ---------- 3. load an existing row (edit mode) ---------- */
  useEffect(() => {
    if (id === 'new') return;
    (async () => {
      const res = await authFetch(`/api/premium/career-profile/${id}`);
      if (!res.ok) return;
      const d   = await res.json();
      setForm(prev => ({
        ...prev,
        scenario_title : d.scenario_title ?? '',
        career_name    : d.career_name    ?? '',
        soc_code       : d.soc_code       ?? '',
        status         : d.status         ?? 'current',
        start_date     : (d.start_date || '').slice(0, 10),           // ← trim
        retirement_start_date : (d.retirement_start_date || '').slice(0, 10),
        college_enrollment_status : d.college_enrollment_status ?? '',
        career_goals   : d.career_goals   ?? '',
        desired_retirement_income_monthly :
          d.desired_retirement_income_monthly ?? ''
      }));
    })();
  }, [id]);

  /* ---------- 4. save ---------- */
  async function save() {
    if (!careerLocked && !form.soc_code) {
     alert('Please pick a valid career from the list first.');
     return;
   }
    try {
      const res = await authFetch('/api/premium/career-profile', {
        method  : 'POST',
        headers : { 'Content-Type': 'application/json' },
        body    : JSON.stringify({
          ...form,
          start_date            : form.start_date?.slice(0, 10) || null,
          retirement_start_date : form.retirement_start_date?.slice(0, 10) || null,
          id: id === 'new' ? undefined : id       // upsert
        })
      });
      if (!res.ok) throw new Error(await res.text());
       const data = await res.json(); // { career_profile_id: '...' }
   const activeId = data.career_profile_id || id;   // handle edit vs new
   localStorage.setItem('lastSelectedCareerProfileId', activeId);
   nav(`/career-roadmap/${activeId}`, { replace: true }); // guarantees Roadmap selects this one
    } catch (err) {
      console.error(err);
      alert(err.message);
    }
  }

  /* ---------- 5. render ---------- */
  return (
    <div className="max-w-lg mx-auto space-y-4">
      <h2 className="text-2xl font-semibold">
        {id === 'new' ? 'New' : 'Edit'} Career Profile
      </h2>

      {/* Scenario title */}
      <label className="block">
        <span className="font-medium">Scenario Title</span>
        <input
          name="scenario_title"
          className="mt-1 w-full border rounded p-2"
          placeholder="e.g. Data‑Scientist Plan"
          value={form.scenario_title}
          onChange={handleChange}
        />
      </label>

      {/* Career picker (locked vs editable) */}
      <label className="block font-medium">Career *</label>
      {careerLocked ? (
        <div className="flex items-center space-x-2">
          <input
            className="flex-1 border rounded p-2 bg-gray-100"
            value={form.career_name}
            disabled
          />
          <button
            type="button"
            className="text-blue-600 underline text-sm"
            onClick={unlockCareer}
          >
            Change
          </button>
        </div>
      ) : (
        <CareerSearch onCareerSelected={handleCareerSelected} required />
      )}

      {/* Status */}
      <label className="block">
        <span className="font-medium">Status</span>
        <select
          name="status"
          className="mt-1 w-full border rounded p-2"
          value={form.status}
          onChange={handleChange}
        >
          <option value="current">current</option>
          <option value="future">future</option>
          <option value="retired">retired</option>
        </select>
      </label>

      {/* Dates */}
      <label className="block">
        <span className="font-medium">Start Date</span>
        <input
          type="date"
          name="start_date"
          className="mt-1 w-full border rounded p-2"
          value={form.start_date}
          onChange={handleChange}
        />
      </label>

      <label className="block">
        <span className="font-medium">Retirement Start Date</span>
        <input
          type="date"
          name="retirement_start_date"
          className="mt-1 w-full border rounded p-2"
          value={form.retirement_start_date}
          onChange={handleChange}
        />
      </label>

      {/* College status */}
      <label className="block">
        <span className="font-medium">College Enrollment Status</span>
        <select
          name="college_enrollment_status"
          className="mt-1 w-full border rounded p-2"
          value={form.college_enrollment_status}
          onChange={handleChange}
        >
          <option value="">-- select --</option>
          <option value="not_enrolled">Not Enrolled / Not Planning</option>
          <option value="currently_enrolled">Currently Enrolled</option>
          <option value="prospective_student">Planning to Enroll (Prospective)</option>
        </select>
      </label>

      {/* Career goals */}
      <label className="block">
        <span className="font-medium">Career Goals</span>
        <textarea
          rows={3}
          name="career_goals"
          className="mt-1 w-full border rounded p-2"
          placeholder="e.g. Become a senior data‑scientist in five years…"
          value={form.career_goals}
          onChange={handleChange}
        />
      </label>

      {/* Desired retirement income */}
      <label className="block">
        <span className="font-medium">Desired Retirement Income / Month ($)</span>
        <input
          type="number"
          name="desired_retirement_income_monthly"
          className="mt-1 w-full border rounded p-2"
          placeholder="e.g. 6000"
          value={form.desired_retirement_income_monthly}
          onChange={handleChange}
        />
      </label>

      {/* Action buttons */}
      <div className="pt-4 flex justify-between">
        <button
          type="button"
          onClick={() => nav(-1)}
          className="bg-gray-200 hover:bg-gray-300 text-gray-700 font-semibold py-2 px-4 rounded"
        >
          ← Back
        </button>
        <button
          type="button"
          onClick={save}
          className="bg-blue-600 hover:bg-blue-700 text-white font-semibold py-2 px-4 rounded"
        >
          Save
        </button>
      </div>
    </div>
  );
}