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const npmlog = require('npmlog')
module.exports = cls => class Tracker extends cls {
#progress = new Map()
#setProgress
constructor (options = {}) {
super(options)
this.#setProgress = !!options.progress
}
addTracker (section, subsection = null, key = null) {
if (section === null || section === undefined) {
this.#onError(`Tracker can't be null or undefined`)
}
if (key === null) {
key = subsection
}
const hasTracker = this.#progress.has(section)
const hasSubtracker = this.#progress.has(`${section}:${key}`)
if (hasTracker && subsection === null) {
// 0. existing tracker, no subsection
this.#onError(`Tracker "${section}" already exists`)
} else if (!hasTracker && subsection === null) {
// 1. no existing tracker, no subsection
// Create a new tracker from npmlog
// starts progress bar
if (this.#setProgress && this.#progress.size === 0) {
npmlog.enableProgress()
}
this.#progress.set(section, npmlog.newGroup(section))
} else if (!hasTracker && subsection !== null) {
// 2. no parent tracker and subsection
this.#onError(`Parent tracker "${section}" does not exist`)
} else if (!hasTracker || !hasSubtracker) {
// 3. existing parent tracker, no subsection tracker
// Create a new subtracker in this.#progress from parent tracker
this.#progress.set(`${section}:${key}`,
this.#progress.get(section).newGroup(`${section}:${subsection}`)
)
}
// 4. existing parent tracker, existing subsection tracker
// skip it
}
finishTracker (section, subsection = null, key = null) {
if (section === null || section === undefined) {
this.#onError(`Tracker can't be null or undefined`)
}
if (key === null) {
key = subsection
}
const hasTracker = this.#progress.has(section)
const hasSubtracker = this.#progress.has(`${section}:${key}`)
// 0. parent tracker exists, no subsection
// Finish parent tracker and remove from this.#progress
if (hasTracker && subsection === null) {
// check if parent tracker does
// not have any remaining children
const keys = this.#progress.keys()
for (const key of keys) {
if (key.match(new RegExp(section + ':'))) {
this.finishTracker(section, key)
}
}
// remove parent tracker
this.#progress.get(section).finish()
this.#progress.delete(section)
// remove progress bar if all
// trackers are finished
if (this.#setProgress && this.#progress.size === 0) {
npmlog.disableProgress()
}
} else if (!hasTracker && subsection === null) {
// 1. no existing parent tracker, no subsection
this.#onError(`Tracker "${section}" does not exist`)
} else if (!hasTracker || hasSubtracker) {
// 2. subtracker exists
// Finish subtracker and remove from this.#progress
this.#progress.get(`${section}:${key}`).finish()
this.#progress.delete(`${section}:${key}`)
}
// 3. existing parent tracker, no subsection
}
#onError (msg) {
if (this.#setProgress) {
npmlog.disableProgress()
}
throw new Error(msg)
}
}