import { checkGithubUsername, digestSHA256, getContributorInfo, getUserNameWithNoreplyEmail, } from './utils/index.js';
/**
 * Get raw contributors from commits
 *
 * 从提交记录中获取原始贡献者信息
 *
 * @param commits - Git commits
 *
 * Git 提交记录
 *
 * @param options - Contributors options
 *
 * 贡献者选项
 *
 * @param gitProvider - Git provider
 *
 * Git 提供商
 */
export const getRawContributors = (commits, options, gitProvider) => {
    const contributors = new Map();
    // copy and reverse commits
    for (const commit of [...commits].reverse()) {
        const authors = [
            { name: commit.author, email: commit.email },
            ...commit.coAuthors,
        ];
        for (const { name, email } of authors) {
            const usernameWithNoreplyEmail = getUserNameWithNoreplyEmail(email);
            const config = getContributorInfo({ name: usernameWithNoreplyEmail ?? name, email }, options.info);
            // Only trust the username from `info` and `noreply email`.
            const username = config?.username ?? usernameWithNoreplyEmail;
            const contributor = contributors.get(username ?? name);
            if (contributor) {
                contributor.commits++;
                // try to rewrite the no-reply email to a genuine email
                if (contributor.email.includes('@users.noreply.github.com')) {
                    contributor.email = config?.email ?? email;
                }
            }
            else {
                const item = {
                    name: config?.name ?? username ?? name,
                    // if `username` not found, check if `name` is a valid github username
                    username: username ??
                        (gitProvider === 'github' && checkGithubUsername(name) ? name : ''),
                    email: config?.email || email,
                    commits: 1,
                };
                if (options.avatar)
                    item.avatar =
                        config?.avatar ??
                            (item.username
                                ? options.avatarPattern?.replace(':username', item.username)
                                : null) ??
                            (item.username
                                ? `https://avatars.githubusercontent.com/${item.username}?v=4`
                                : `https://gravatar.com/avatar/${digestSHA256(email)}?d=retro`);
                const url = config?.url ??
                    (item.username ? `https://github.com/${item.username}` : undefined);
                if (url)
                    item.url = url;
                contributors.set(username ?? name, item);
            }
        }
    }
    return Array.from(contributors.values()).filter((item, index, self) => {
        // If one of the contributors is a "noreply" email address, and there's
        // already a contributor with the same name, it is very likely a duplicate,
        // so it can be removed.
        if (item.email.split('@')[1]?.match(/no-?reply/)) {
            const realIndex = self.findIndex((t) => t.name === item.name);
            if (realIndex !== index) {
                // Update the "real" contributor to also include the noreply's commits
                self[realIndex].commits += item.commits;
                return false;
            }
            return true;
        }
        return true;
    });
};
/**
 * Resolve contributors
 *
 * 解析贡献者
 *
 * @param commits - Git commits
 *
 * Git 提交记录
 *
 * @param gitProvider - Git provider
 *
 * Git 提供商
 *
 * @param options - Contributors options
 *
 * 贡献者选项
 *
 * @param extraContributors - Extra contributors
 *
 * 额外贡献者
 *
 * @default []
 */
export const resolveContributors = (commits, gitProvider, options, extraContributors = []) => {
    const contributors = getRawContributors(commits, options, gitProvider);
    if (options.info?.length && extraContributors.length) {
        for (const extraContributor of extraContributors) {
            if (contributors.every((item) => item.username !== extraContributor &&
                item.name !== extraContributor)) {
                const contributorInfo = getContributorInfo({ name: extraContributor }, options.info);
                if (!contributorInfo)
                    continue;
                const result = {
                    name: contributorInfo.name ?? extraContributor,
                    username: contributorInfo.username,
                    email: contributorInfo.email ?? '',
                    commits: 0,
                };
                const url = contributorInfo.url ??
                    (gitProvider === 'github'
                        ? `https://github.com/${contributorInfo.username}`
                        : null);
                if (options.avatar)
                    result.avatar =
                        contributorInfo.avatar ??
                            options.avatarPattern?.replace(':username', contributorInfo.username) ??
                            (gitProvider === 'github'
                                ? `https://avatars.githubusercontent.com/${contributorInfo.username}?v=4`
                                : `https://gravatar.com/avatar/${digestSHA256(contributorInfo.username)}?d=retro`);
                if (url)
                    result.url = url;
                contributors.push(result);
            }
        }
    }
    return options.transform?.(contributors) ?? contributors;
};