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import { create } from 'zustand'
import type { Tab } from '@/types'
import { readFile, writeFile, saveDialog, pickFile } from '@/lib/tauri'
import { detectLanguage } from '@/lib/languageMap'
interface TabsState {
tabs: Tab[]
activeTabId: string | null
cursorLine: number
cursorCol: number
savingId: string | null
statusMessage: string | null
untitledCounter: number
openFile: (path: string) => Promise<void>
pickAndOpenFile: () => Promise<void>
createUntitledFile: () => void
closeTab: (id: string) => void
setActiveTab: (id: string) => void
updateContent: (id: string, content: string) => void
saveFile: (id: string) => Promise<void>
setCursorPosition: (line: number, col: number) => void
clearStatusMessage: () => void
}
function isUntitled(id: string) {
return id.startsWith('untitled://')
}
export const useTabsStore = create<TabsState>((set, get) => ({
tabs: [],
activeTabId: null,
cursorLine: 1,
cursorCol: 1,
savingId: null,
statusMessage: null,
untitledCounter: 0,
openFile: async (path: string) => {
const { tabs } = get()
const existing = tabs.find((t) => t.path === path)
if (existing) {
set({ activeTabId: existing.id })
return
}
try {
const content = await readFile(path)
const name = path.split(/[\\/]/).pop() ?? 'untitled'
const id = path
const tab: Tab = {
id,
path,
name,
language: detectLanguage(name),
content,
modified: false,
}
set({ tabs: [...tabs, tab], activeTabId: id })
} catch (err) {
console.error('Failed to open file:', err)
}
},
pickAndOpenFile: async () => {
const path = await pickFile()
if (path) get().openFile(path)
},
createUntitledFile: () => {
const { tabs, untitledCounter } = get()
const n = untitledCounter + 1
const name = `Untitled-${n}`
const id = `untitled://${n}`
const tab: Tab = {
id,
path: id,
name,
language: 'plaintext',
content: '',
modified: false,
}
set({ tabs: [...tabs, tab], activeTabId: id, untitledCounter: n })
},
closeTab: (id: string) => {
const { tabs, activeTabId } = get()
const newTabs = tabs.filter((t) => t.id !== id)
let newActive = activeTabId
if (activeTabId === id) {
const idx = tabs.findIndex((t) => t.id === id)
newActive = newTabs[Math.min(idx, newTabs.length - 1)]?.id ?? null
}
set({ tabs: newTabs, activeTabId: newActive })
},
setActiveTab: (id: string) => {
set({ activeTabId: id })
},
updateContent: (id: string, content: string) => {
set((state) => ({
tabs: state.tabs.map((t) =>
t.id === id ? { ...t, content, modified: true } : t
),
}))
},
saveFile: async (id: string) => {
const { tabs } = get()
const tab = tabs.find((t) => t.id === id)
if (!tab) return
set({ savingId: id, statusMessage: null })
try {
let targetPath = tab.path
if (isUntitled(targetPath)) {
const picked = await saveDialog(tab.name)
if (!picked) {
set({ savingId: null })
return
}
targetPath = picked
}
await writeFile(targetPath, tab.content)
const name = targetPath.split(/[\\/]/).pop() ?? tab.name
set({
tabs: tabs.map((t) =>
t.id === id
? { ...t, path: targetPath, name, language: detectLanguage(name), modified: false }
: t
),
savingId: null,
statusMessage: 'Saved',
})
} catch (err) {
set({ savingId: null, statusMessage: 'Save failed' })
console.error('Failed to save file:', err)
}
},
setCursorPosition: (line: number, col: number) => {
set({ cursorLine: line, cursorCol: col })
},
clearStatusMessage: () => {
set({ statusMessage: null })
},
}))
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