85 lines
2.2 KiB
TypeScript
85 lines
2.2 KiB
TypeScript
'use strict'
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import DB from '../model/db'
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import { fuzzyMatch, getCharCodes } from '../util/fuzzy'
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import workspace from '../workspace'
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import Prompt from './prompt'
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const logger = require('../util/logger')('list-history')
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export default class InputHistory {
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private db: DB
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private index = -1
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private loaded: string[] = []
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private current: string[] = []
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private historyInput: string
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private key: string
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constructor(
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private prompt: Prompt,
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private name: string
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) {
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this.db = workspace.createDatabase(`list-${name}-history`)
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this.key = Buffer.from(workspace.cwd).toString('base64')
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}
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public filter(): void {
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let { input } = this.prompt
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if (input == this.curr) return
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this.historyInput = ''
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let codes = getCharCodes(input)
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this.current = this.loaded.filter(s => fuzzyMatch(codes, s))
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this.index = -1
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}
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public get curr(): string | null {
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return this.index == -1 ? null : this.current[this.index]
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}
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public load(input: string): void {
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let { db } = this
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input = input || ''
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let arr = db.fetch(this.key)
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if (!arr || !Array.isArray(arr)) {
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this.loaded = []
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} else {
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this.loaded = arr
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}
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this.index = -1
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this.current = this.loaded.filter(s => s.startsWith(input))
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}
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public add(): void {
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let { loaded, db, prompt } = this
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let { input } = prompt
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if (!input || input.length < 2 || input == this.historyInput) return
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let idx = loaded.indexOf(input)
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if (idx != -1) loaded.splice(idx, 1)
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loaded.push(input)
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if (loaded.length > 200) {
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loaded = loaded.slice(-200)
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}
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db.push(this.key, loaded)
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}
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public previous(): void {
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let { current, index } = this
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if (!current || !current.length) return
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if (index <= 0) {
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this.index = current.length - 1
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} else {
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this.index = index - 1
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}
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this.historyInput = this.prompt.input = current[this.index] || ''
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}
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public next(): void {
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let { current, index } = this
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if (!current || !current.length) return
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if (index == current.length - 1) {
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this.index = 0
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} else {
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this.index = index + 1
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}
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this.historyInput = this.prompt.input = current[this.index] || ''
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}
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}
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