@kentcdodds/lineage

import githubPaginate from 'kody:@kentcdodds/github/paginate'
import githubRequest from 'kody:@kentcdodds/github/request'
import { repoHtmlUrl } from './repo.ts'
import type { RepoSettings } from './types.ts'

export { repoHtmlUrl }

export type GithubCommitListItem = {
	sha: string
	html_url: string
	commit: {
		message: string
		author: { name?: string; date?: string } | null
		committer: { name?: string; date?: string } | null
	}
	parents: Array<{ sha: string }>
}

export type GithubCommitFile = {
	filename: string
	status: string
	additions: number
	deletions: number
	changes: number
	patch?: string
}

export type GithubCommitDetail = GithubCommitListItem & {
	stats?: { additions: number; deletions: number; total: number }
	files?: GithubCommitFile[]
}

export async function listBranchCommits(
	repo: RepoSettings,
	options: { maxPages?: number } = {},
): Promise<GithubCommitListItem[]> {
	const result = await githubPaginate({
		account: 'bot',
		path: `/repos/${repo.owner}/${repo.repo}/commits`,
		query: { sha: repo.branch, per_page: 100 },
		maxPages: options.maxPages ?? 40,
	})
	return result.items as GithubCommitListItem[]
}

export async function getCommitDetail(
	repo: RepoSettings,
	sha: string,
): Promise<GithubCommitDetail> {
	const response = await githubRequest({
		account: 'bot',
		path: `/repos/${repo.owner}/${repo.repo}/commits/${sha}`,
		throwOnError: true,
	})
	return response.data as GithubCommitDetail
}

export async function getRepoTextFile(
	repo: RepoSettings,
	path: string,
): Promise<string | null> {
	const response = await githubRequest({
		account: 'bot',
		path: `/repos/${repo.owner}/${repo.repo}/contents/${path}`,
		headers: { Accept: 'application/vnd.github.raw' },
		query: { ref: repo.branch },
	})
	if (!response.ok) return null
	if (typeof response.text === 'string' && response.text && !response.text.startsWith('{')) {
		return response.text
	}
	if (typeof response.data === 'string') return response.data
	return null
}