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import React, { Component } from 'react'
import UploadImage from './lib/uploadImage.component'
import { post } from './util'
const initialState = {
image: null,
url: "",
res: null,
loading: false,
}
export default class PhashApp extends Component {
state = { ...initialState }
upload(blob) {
if (this.state.image) {
URL.revokeObjectURL(this.state.image)
}
const url = URL.createObjectURL(blob)
this.setState({ image: url, loading: true })
const fd = new FormData()
fd.append('q', blob)
post('/api/v1/match', fd)
.then(res => {
console.log(res)
this.setState({ res, loading: false })
})
.catch(err => {
console.log(err)
this.setState({ loading: false })
})
}
submit() {
const { url } = this.state
if (!url || url.indexOf('http') !== 0) return
this.setState({ image: url, loading: true })
const fd = new FormData()
fd.append('url', url)
post('/api/v1/match', fd)
.then(res => {
console.log(res)
this.setState({ res, loading: false })
})
.catch(err => {
console.log(err)
this.setState({ loading: false })
})
}
render() {
return (
<div className='app'>
<h1>Perceptual Hash Demo</h1>
{this.renderQuery()}
{this.renderResults()}
</div>
)
}
renderQuery() {
const { image } = this.state
const style = {}
if (image) {
style.backgroundImage = 'url(' + image + ')'
style.backgroundSize = 'cover'
style.opacity = 1
}
return (
<div className='query'>
<label>
<span>Upload image</span>
<UploadImage onUpload={this.upload.bind(this)} />
</label>
<label>
<span>Enter URL</span>
<input
type='text'
value={this.state.url}
onChange={e => this.setState({ url: e.target.value })}
onKeyDown={e => e.keyCode === 13 && this.submit()}
placeholder='https://'
/>
</label>
{image && <div style={style} />}
</div>
)
}
renderResults() {
const { loading, res } = this.state
if (!res) {
return (
<div className='results'>
</div>
)
}
if (loading) {
return (
<div className='results'>
<i>Loading...</i>
</div>
)
}
const { success, error, match, closest_match } = res
if (!success) {
return (
<div className='results'>
<b>Error: {error}</b>
</div>
)
}
if (!match) {
return (
<div className='results'>
No match, image added to database
</div>
)
}
const { phash, score, sha256, url} = closest_match
return (
<div className='results'>
<img src={url} /><br />
Closest match: {sha256}<br />
Score: {score}<br />
Phash: {phash.toString(16)}
</div>
)
}
}
|
