import React, { useState, useEffect } from 'react'
import { Provider } from '../../shared/types'
import { inferWebsiteUrl } from '../../shared/utils'
import './AddProviderModal.css'

interface EditProviderModalProps {
  provider: Provider
  onSave: (provider: Provider) => void
  onClose: () => void
}

const EditProviderModal: React.FC<EditProviderModalProps> = ({ provider, onSave, onClose }) => {
  const [formData, setFormData] = useState({
    name: provider.name,
    apiUrl: provider.apiUrl,
    apiKey: provider.apiKey,
    websiteUrl: provider.websiteUrl || ''
  })
  const [showPassword, setShowPassword] = useState(false)
  const [error, setError] = useState('')

  useEffect(() => {
    setFormData({
      name: provider.name,
      apiUrl: provider.apiUrl,
      apiKey: provider.apiKey,
      websiteUrl: provider.websiteUrl || ''
    })
  }, [provider.id, provider.name, provider.apiUrl, provider.apiKey, provider.websiteUrl])

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault()
    setError('')
    
    if (!formData.name || !formData.apiUrl || !formData.apiKey) {
      setError('请填写所有必填字段')
      return
    }

    onSave({
      ...provider,
      ...formData
    })
  }

  const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const { name, value } = e.target
    const newFormData = {
      ...formData,
      [name]: value
    }
    
    // 如果修改的是API地址，自动推测网站地址
    if (name === 'apiUrl') {
      newFormData.websiteUrl = inferWebsiteUrl(value)
    }
    
    setFormData(newFormData)
  }

  const handleApiUrlBlur = (e: React.FocusEvent<HTMLInputElement>) => {
    const apiUrl = e.target.value.trim()
    if (apiUrl) {
      let normalizedApiUrl = apiUrl
      
      // 如果没有协议，添加 https://
      if (!normalizedApiUrl.match(/^https?:\/\//)) {
        normalizedApiUrl = 'https://' + normalizedApiUrl
      }
      
      setFormData(prev => ({
        ...prev,
        apiUrl: normalizedApiUrl,
        websiteUrl: inferWebsiteUrl(normalizedApiUrl)
      }))
    }
  }

  return (
    <div className="modal-overlay" onClick={onClose}>
      <div className="modal-content" onClick={(e) => e.stopPropagation()}>
        <h2>编辑供应商</h2>

        {error && (
          <div className="error-message">
            {error}
          </div>
        )}

        <form onSubmit={handleSubmit}>
          <div className="form-group">
            <label htmlFor="name">供应商名称 *</label>
            <input
              type="text"
              id="name"
              name="name"
              value={formData.name}
              onChange={handleChange}
              placeholder="例如：官方 Anthropic"
              required
              autoComplete="off"
            />
          </div>

          <div className="form-group">
            <label htmlFor="apiUrl">API 地址 *</label>
            <input
              type="url"
              id="apiUrl"
              name="apiUrl"
              value={formData.apiUrl}
              onChange={handleChange}
              onBlur={handleApiUrlBlur}
              placeholder="https://api.anthropic.com"
              required
              autoComplete="off"
            />
          </div>

          <div className="form-group">
            <label htmlFor="websiteUrl">网站地址</label>
            <input
              type="text"
              id="websiteUrl"
              name="websiteUrl"
              value={formData.websiteUrl}
              onChange={handleChange}
              placeholder="https://example.com（可选）"
              autoComplete="off"
            />
            <small className="field-hint">用于在面板中显示可访问的网站链接，留空则显示API地址</small>
          </div>

          <div className="form-group">
            <label htmlFor="apiKey">API Key *</label>
            <div className="password-input-wrapper">
              <input
                type={showPassword ? "text" : "password"}
                id="apiKey"
                name="apiKey"
                value={formData.apiKey}
                onChange={handleChange}
                placeholder={formData.name && formData.name.includes('YesCode') ? 'cr_...' : 'sk-...'}
                required
                autoComplete="off"
              />
              <button
                type="button"
                className="password-toggle"
                onClick={() => setShowPassword(!showPassword)}
                tabIndex={-1}
                title={showPassword ? "隐藏密码" : "显示密码"}
              >
                {showPassword ? (
                  <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor">
                    <path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z" />
                    <circle cx="12" cy="12" r="3" />
                  </svg>
                ) : (
                  <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor">
                    <path d="M17.94 17.94A10.07 10.07 0 0 1 12 20c-7 0-11-8-11-8a18.45 18.45 0 0 1 5.06-5.94M9.9 4.24A9.12 9.12 0 0 1 12 4c7 0 11 8 11 8a18.5 18.5 0 0 1-2.16 3.19m-6.72-1.07a3 3 0 1 1-4.24-4.24" />
                    <line x1="1" y1="1" x2="23" y2="23" />
                  </svg>
                )}
              </button>
            </div>
          </div>

          <div className="form-actions">
            <button type="button" className="cancel-btn" onClick={onClose}>
              取消
            </button>
            <button type="submit" className="submit-btn">
              保存
            </button>
          </div>
        </form>
      </div>
    </div>
  )
}

export default EditProviderModal