import { existsSync, readFileSync, writeFileSync } from 'node:fs'

import path from 'node:path'

import { homePath } from '../../constants/paths.mts'

import {

COMPLETION_CMD_PREFIX,

getBashrcDetails,

} from '../../util/cli/completion.mts'

import type { CResult } from '../../types.mts'

export function findRemainingCompletionSetups(bashrc: string): string[] {

return bashrc

.split(/\r?\n/)

.map(s => s.trim())

.filter(s => s.startsWith(COMPLETION_CMD_PREFIX))

.map(s => s.slice(COMPLETION_CMD_PREFIX.length).trim())

}

export async function teardownTabCompletion(

targetName: string,

): Promise<CResult<{ action: string; left: string[] }>> {

const result = getBashrcDetails(targetName)

if (!result.ok) {

return result

}

const { completionCommand, sourcingCommand, toAddToBashrc } = result.data

// Remove from ~/.bashrc if found

const bashrc = homePath ? path.join(homePath, '.bashrc') : ''

if (bashrc && existsSync(bashrc)) {

const content = readFileSync(bashrc, 'utf8')

if (content.includes(toAddToBashrc)) {

const newContent = content

// Try to remove the whole thing with comment first

.replaceAll(toAddToBashrc, '')

// Comment may have been edited away, try to remove the command at least

.replaceAll(sourcingCommand, '')

.replaceAll(completionCommand, '')

writeFileSync(bashrc, newContent, 'utf8')

return {

ok: true,

data: {

action: 'removed',

left: findRemainingCompletionSetups(newContent),

},

message: 'Removed completion from ~/.bashrc',

}

}

const left = findRemainingCompletionSetups(content)

return {

ok: true,

data: {

action: 'missing',

left,

},

message: `Completion was not found in ~/.bashrc${left.length ? ' (you may need to manually edit your .bashrc to clean this up...)' : ''}`,

}

}

return {

ok: true, // Eh. I think this makes most sense.

data: { action: 'not found', left: [] },

message: '~/.bashrc not found, skipping',

}

}