// src/components/ui/EditableText.jsx
// Inline hover-to-edit text — shows a pencil icon on hover, click swaps to a
// text input in place. Enter/blur saves, Escape cancels. Use for a single
// display value that's editable in-place without a modal (e.g. a page hero
// title) — for anything with more than one field, use a Modal instead.
//
// Props:
//   value       — string — current display value
//   placeholder — string — shown (italic, muted) when value is empty
//   onSave      — (newValue) => void | Promise — called on confirm; not called if unchanged
//   editable    — bool — hide the pencil / disable editing entirely          (default: true)
//   textStyle   — style object applied to the display span AND the input, so
//                 swapping between them doesn't shift surrounding layout
//   className   — extra class on the root element
//   inputAriaLabel — string — accessible label for the input while editing

import { useState, useRef, useEffect } from 'react'
import Icon from '@/components/ui/Icon'

export default function EditableText({
  value,
  placeholder = 'Untitled',
  onSave,
  editable = true,
  textStyle = {},
  className = '',
  inputAriaLabel = 'Edit value',
}) {
  const [editing, setEditing] = useState(false)
  const [draft, setDraft] = useState(value || '')
  const [saving, setSaving] = useState(false)
  const inputRef = useRef(null)

  useEffect(() => {
    if (editing) {
      setDraft(value || '')
      // Wait a tick so the input exists before focusing.
      requestAnimationFrame(() => inputRef.current?.select())
    }
  }, [editing, value])

  const commit = async () => {
    const trimmed = draft.trim()
    setEditing(false)
    if (trimmed === (value || '')) return
    setSaving(true)
    try {
      await onSave?.(trimmed)
    } finally {
      setSaving(false)
    }
  }

  const cancel = () => {
    setDraft(value || '')
    setEditing(false)
  }

  if (editing) {
    return (
      <input
        ref={inputRef}
        type="text"
        value={draft}
        onChange={(e) => setDraft(e.target.value)}
        onBlur={commit}
        onKeyDown={(e) => {
          if (e.key === 'Enter') { e.preventDefault(); commit() }
          if (e.key === 'Escape') { e.preventDefault(); cancel() }
        }}
        aria-label={inputAriaLabel}
        disabled={saving}
        className={className}
        style={{
          ...textStyle,
          background: 'var(--color-bg-elevated)',
          border: '1px solid var(--color-border-strong)',
          borderRadius: 'var(--radius-sm)',
          padding: '1px 6px',
          outline: 'none',
          minWidth: '120px',
        }}
      />
    )
  }

  return (
    <span
      className={['editable-text', className].filter(Boolean).join(' ')}
      style={{ display: 'inline-flex', alignItems: 'center', gap: 'var(--space-2)' }}
    >
      <span style={{ ...textStyle, ...(value ? {} : { color: 'var(--color-text-muted)', fontStyle: 'italic' }) }}>
        {value || placeholder}
      </span>
      {editable && (
        <button
          type="button"
          onClick={() => setEditing(true)}
          aria-label={inputAriaLabel}
          title={inputAriaLabel}
          className="editable-text__pencil"
          style={{
            display: 'inline-flex',
            alignItems: 'center',
            justifyContent: 'center',
            width: 24,
            height: 24,
            padding: 0,
            border: 'none',
            borderRadius: 'var(--radius-sm)',
            background: 'transparent',
            color: 'var(--color-text-muted)',
            cursor: 'pointer',
            opacity: 0,
            transition: 'opacity 0.15s, color 0.15s, background 0.15s',
          }}
        >
          <Icon name="edit" size={14} />
        </button>
      )}
    </span>
  )
}