oppi.li
source dump of claude code
1import type { StructuredPatchHunk } from 'diff'
2import { useEffect, useMemo, useState } from 'react'
3import {
4 fetchGitDiff,
5 fetchGitDiffHunks,
6 type GitDiffResult,
7 type GitDiffStats,
8} from '../utils/gitDiff.js'
9
10const MAX_LINES_PER_FILE = 400
11
12export type DiffFile = {
13 path: string
14 linesAdded: number
15 linesRemoved: number
16 isBinary: boolean
17 isLargeFile: boolean
18 isTruncated: boolean
19 isNewFile?: boolean
20 isUntracked?: boolean
21}
22
23export type DiffData = {
24 stats: GitDiffStats | null
25 files: DiffFile[]
26 hunks: Map<string, StructuredPatchHunk[]>
27 loading: boolean
28}
29
30/**
31 * Hook to fetch current git diff data on demand.
32 * Fetches both stats and hunks when component mounts.
33 */
34export function useDiffData(): DiffData {
35 const [diffResult, setDiffResult] = useState<GitDiffResult | null>(null)
36 const [hunks, setHunks] = useState<Map<string, StructuredPatchHunk[]>>(
37 new Map(),
38 )
39 const [loading, setLoading] = useState(true)
40
41 // Fetch diff data on mount
42 useEffect(() => {
43 let cancelled = false
44
45 async function loadDiffData() {
46 try {
47 // Fetch both stats and hunks
48 const [statsResult, hunksResult] = await Promise.all([
49 fetchGitDiff(),
50 fetchGitDiffHunks(),
51 ])
52
53 if (!cancelled) {
54 setDiffResult(statsResult)
55 setHunks(hunksResult)
56 setLoading(false)
57 }
58 } catch (_error) {
59 if (!cancelled) {
60 setDiffResult(null)
61 setHunks(new Map())
62 setLoading(false)
63 }
64 }
65 }
66
67 void loadDiffData()
68
69 return () => {
70 cancelled = true
71 }
72 }, [])
73
74 return useMemo(() => {
75 if (!diffResult) {
76 return { stats: null, files: [], hunks: new Map(), loading }
77 }
78
79 const { stats, perFileStats } = diffResult
80 const files: DiffFile[] = []
81
82 // Iterate over perFileStats to get all files including large/skipped ones
83 for (const [path, fileStats] of perFileStats) {
84 const fileHunks = hunks.get(path)
85 const isUntracked = fileStats.isUntracked ?? false
86
87 // Detect large file (in perFileStats but not in hunks, and not binary/untracked)
88 const isLargeFile = !fileStats.isBinary && !isUntracked && !fileHunks
89
90 // Detect truncated file (total > limit means we truncated)
91 const totalLines = fileStats.added + fileStats.removed
92 const isTruncated =
93 !isLargeFile && !fileStats.isBinary && totalLines > MAX_LINES_PER_FILE
94
95 files.push({
96 path,
97 linesAdded: fileStats.added,
98 linesRemoved: fileStats.removed,
99 isBinary: fileStats.isBinary,
100 isLargeFile,
101 isTruncated,
102 isUntracked,
103 })
104 }
105
106 files.sort((a, b) => a.path.localeCompare(b.path))
107
108 return { stats, files, hunks, loading: false }
109 }, [diffResult, hunks, loading])
110}