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| import React from 'react';
import { View, Text, ScrollView, StyleSheet } from 'react-native';
import { colors } from '../theme/colors';
import { fontSizes, fonts } from '../theme/typography';
interface DiffLine {
type: 'add' | 'remove' | 'context' | 'header';
content: string;
lineNo?: number;
}
interface Props {
diff: string;
}
function parseDiff(diff: string): DiffLine[] {
const lines: DiffLine[] = [];
for (const raw of diff.split('\n')) {
if (raw.startsWith('@@')) {
lines.push({ type: 'header', content: raw });
} else if (raw.startsWith('+') && !raw.startsWith('+++')) {
lines.push({ type: 'add', content: raw.slice(1) });
} else if (raw.startsWith('-') && !raw.startsWith('---')) {
lines.push({ type: 'remove', content: raw.slice(1) });
} else {
lines.push({ type: 'context', content: raw.startsWith(' ') ? raw.slice(1) : raw });
}
}
return lines;
}
function lineStyle(type: DiffLine['type']) {
switch (type) {
case 'add': return { bg: 'rgba(52,211,153,0.10)', prefix: '+', color: colors.green };
case 'remove': return { bg: 'rgba(248,113,113,0.10)', prefix: '-', color: colors.red };
case 'header': return { bg: 'rgba(140,109,255,0.10)', prefix: '', color: colors.accent };
default: return { bg: 'transparent', prefix: ' ', color: colors.textMuted };
}
}
export function DiffViewer({ diff }: Props) {
const lines = parseDiff(diff);
return (
<ScrollView horizontal style={styles.scroll} showsHorizontalScrollIndicator={false}>
<View style={styles.container}>
{lines.map((line, i) => {
const s = lineStyle(line.type);
return (
<View key={i} style={[styles.line, { backgroundColor: s.bg }]}>
<Text style={[styles.prefix, { color: s.color }]}>{s.prefix}</Text>
<Text style={[styles.code, { color: s.color }]}>
{line.content || ' '}
</Text>
</View>
);
})}
</View>
</ScrollView>
);
}
const styles = StyleSheet.create({
scroll: {
flex: 1,
backgroundColor: colors.bgSecondary,
borderRadius: 8,
},
container: {
padding: 4,
minWidth: '100%',
},
line: {
flexDirection: 'row',
paddingHorizontal: 4,
paddingVertical: 1,
borderRadius: 2,
},
prefix: {
fontSize: fontSizes.xs,
fontFamily: fonts.mono,
width: 14,
textAlign: 'center',
},
code: {
fontSize: fontSizes.xs,
fontFamily: fonts.mono,
lineHeight: 18,
},
});
|