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import React, { Component } from 'react'
import UploadImage from './lib/uploadImage.component'
import { post } from './util'
const initialState = {
'image': null,
'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 })
})
}
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'>
<UploadImage onUpload={this.upload.bind(this)} />
{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>
)
}
console.log(closest_match)
const { ext, phash, score, sha256 } = closest_match
return (
<div className='results'>
Closest match: {sha256}{'.'}{ext}<br />
Score: {score}<br />
Phash: {phash.toString(16)}
</div>
)
}
}
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