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Lifecycle.ts
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Lifecycle.ts
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import { EventEmitter } from 'events'
import { ILifecyclePlugins, IPicGo, IPlugin, Undefinable } from '../types'
import { handleUrlEncode } from '../utils/common'
import { IBuildInEvent } from '../utils/enum'
import { createContext } from '../utils/createContext'
export class Lifecycle extends EventEmitter {
private readonly ctx: IPicGo
constructor (ctx: IPicGo) {
super()
this.ctx = ctx
}
async start (input: any[]): Promise<IPicGo> {
// ensure every upload process has an unique context
const ctx = createContext(this.ctx)
try {
// images input
if (!Array.isArray(input)) {
throw new Error('Input must be an array.')
}
ctx.input = input
ctx.output = []
// lifecycle main
await this.beforeTransform(ctx)
await this.doTransform(ctx)
await this.beforeUpload(ctx)
await this.doUpload(ctx)
await this.afterUpload(ctx)
return ctx
} catch (e: any) {
ctx.log.warn(IBuildInEvent.FAILED)
ctx.emit(IBuildInEvent.UPLOAD_PROGRESS, -1)
ctx.emit(IBuildInEvent.FAILED, e)
ctx.log.error(e)
if (ctx.getConfig<Undefinable<string>>('debug')) {
throw e
}
return ctx
}
}
private async beforeTransform (ctx: IPicGo): Promise<IPicGo> {
ctx.emit(IBuildInEvent.UPLOAD_PROGRESS, 0)
ctx.emit(IBuildInEvent.BEFORE_TRANSFORM, ctx)
ctx.log.info('Before transform')
await this.handlePlugins(ctx.helper.beforeTransformPlugins, ctx)
return ctx
}
private async doTransform (ctx: IPicGo): Promise<IPicGo> {
ctx.emit(IBuildInEvent.UPLOAD_PROGRESS, 30)
const type = ctx.getConfig<Undefinable<string>>('picBed.transformer') || 'path'
let currentTransformer = type
let transformer = ctx.helper.transformer.get(type)
if (!transformer) {
transformer = ctx.helper.transformer.get('path')
currentTransformer = 'path'
ctx.log.warn(`Can't find transformer - ${type}, switch to default transformer - path`)
}
ctx.log.info(`Transforming... Current transformer is [${currentTransformer}]`)
await transformer?.handle(ctx)
return ctx
}
private async beforeUpload (ctx: IPicGo): Promise<IPicGo> {
ctx.emit(IBuildInEvent.UPLOAD_PROGRESS, 60)
ctx.log.info('Before upload')
ctx.emit(IBuildInEvent.BEFORE_UPLOAD, ctx)
await this.handlePlugins(ctx.helper.beforeUploadPlugins, ctx)
return ctx
}
private async doUpload (ctx: IPicGo): Promise<IPicGo> {
let type = ctx.getConfig<Undefinable<string>>('picBed.uploader') || ctx.getConfig<Undefinable<string>>('picBed.current') || 'smms'
let uploader = ctx.helper.uploader.get(type)
let currentTransformer = type
if (!uploader) {
type = 'smms'
currentTransformer = 'smms'
uploader = ctx.helper.uploader.get('smms')
ctx.log.warn(`Can't find uploader - ${type}, switch to default uploader - smms`)
}
ctx.log.info(`Uploading... Current uploader is [${currentTransformer}]`)
await uploader?.handle(ctx)
for (const outputImg of ctx.output) {
outputImg.type = type
}
return ctx
}
private async afterUpload (ctx: IPicGo): Promise<IPicGo> {
ctx.emit(IBuildInEvent.AFTER_UPLOAD, ctx)
ctx.emit(IBuildInEvent.UPLOAD_PROGRESS, 100)
await this.handlePlugins(ctx.helper.afterUploadPlugins, ctx)
let msg = ''
const length = ctx.output.length
// notice, now picgo builtin uploader will encodeOutputURL by default
const isEncodeOutputURL = ctx.getConfig<Undefinable<boolean>>('settings.encodeOutputURL') === true
for (let i = 0; i < length; i++) {
if (typeof ctx.output[i].imgUrl !== 'undefined') {
msg += isEncodeOutputURL ? handleUrlEncode(ctx.output[i].imgUrl!) : ctx.output[i].imgUrl!
if (i !== length - 1) {
msg += '\n'
}
}
delete ctx.output[i].base64Image
delete ctx.output[i].buffer
}
ctx.emit(IBuildInEvent.FINISHED, ctx)
ctx.log.success(`\n${msg}`)
return ctx
}
private async handlePlugins (lifeCyclePlugins: ILifecyclePlugins, ctx: IPicGo): Promise<IPicGo> {
const plugins = lifeCyclePlugins.getList()
const pluginNames = lifeCyclePlugins.getIdList()
const lifeCycleName = lifeCyclePlugins.getName()
await Promise.all(plugins.map(async (plugin: IPlugin, index: number) => {
try {
ctx.log.info(`${lifeCycleName}: ${pluginNames[index]} running`)
await plugin.handle(ctx)
} catch (e) {
ctx.log.error(`${lifeCycleName}: ${pluginNames[index]} error`)
throw e
}
}))
return ctx
}
}
export default Lifecycle