import { getFullLocaleConfig } from '@vuepress/helper';
import { isPlainObject } from 'vuepress/shared';
import { path } from 'vuepress/utils';
import { gitLocaleInfo } from './locales.js';
import { prepareClientConfigFile } from './prepareClientConfigFile.js';
import { resolveChangelog } from './resolveChangelog.js';
import { resolveContributors } from './resolveContributors.js';
import { PLUGIN_NAME, getCommits, inferGitProvider, injectGitOptions, isGitRepo, } from './utils/index.js';
/**
 * Git plugin
 *
 * Git 插件
 *
 * @param [options={}] - Plugin options / 插件选项
 *
 * @example
 * ```ts
 * import { gitPlugin } from '@vuepress/plugin-git'
 *
 * export default {
 *   plugins: [
 *     gitPlugin({
 *       createdTime: true,
 *       updatedTime: true,
 *       contributors: true,
 *       changelog: false
 *     })
 *   ]
 * }
 * ```
 */
export const gitPlugin = ({ createdTime = true, updatedTime = true, contributors = true, changelog = false, filter, 
// eslint-disable-next-line @typescript-eslint/no-deprecated
transformContributors, locales = {}, } = {}) => (app) => {
    const cwd = app.dir.source();
    const isGitRepoValid = isGitRepo(cwd);
    const gitProvider = isGitRepoValid ? inferGitProvider(cwd) : null;
    return {
        name: PLUGIN_NAME,
        define: {
            __GIT_CHANGELOG__: Boolean(changelog),
            __GIT_CONTRIBUTORS__: Boolean(contributors),
            __GIT_LOCALES__: getFullLocaleConfig({
                app,
                name: PLUGIN_NAME,
                default: gitLocaleInfo,
                config: locales,
            }),
            __GIT_OPTIONS__: injectGitOptions(gitProvider, changelog),
        },
        extendsPage: async (page) => {
            page.data.git = {};
            if (!isGitRepoValid || page.filePathRelative === null) {
                return;
            }
            if (filter && !filter(page))
                return;
            const { frontmatter } = page;
            // skip if all features are disabled
            if (!(frontmatter.contributors ?? contributors) &&
                !(frontmatter.changelog ?? changelog) &&
                !createdTime &&
                !updatedTime) {
                return;
            }
            const filePaths = [
                page.filePathRelative,
                ...(page.frontmatter.gitInclude ?? []).map((item) => path.join(page.filePathRelative, '..', item)),
            ];
            const commits = await getCommits(filePaths, cwd, {
                contributors: (frontmatter.contributors ?? contributors) !== false,
                changelog: frontmatter.changelog ?? changelog,
            });
            if (commits.length === 0)
                return;
            if (createdTime) {
                page.data.git.createdTime = commits[commits.length - 1].time;
            }
            if (updatedTime) {
                page.data.git.updatedTime = commits[0].time;
            }
            const contributorsOptions = isPlainObject(contributors)
                ? contributors
                : {};
            if (frontmatter.contributors ?? contributors) {
                contributorsOptions.transform ??= transformContributors;
                page.data.git.contributors = resolveContributors(commits, gitProvider, contributorsOptions, Array.isArray(frontmatter.contributors)
                    ? frontmatter.contributors
                    : []);
            }
            if (frontmatter.changelog ?? changelog) {
                const changelogOptions = isPlainObject(changelog) ? changelog : {};
                page.data.git.changelog = resolveChangelog(app, commits, changelogOptions, contributorsOptions.info ?? []);
            }
        },
        // remove `gitInclude` from frontmatter
        onInitialized: () => {
            app.pages.forEach((page) => {
                delete page.frontmatter.gitInclude;
            });
        },
        clientConfigFile: () => prepareClientConfigFile(app, { changelog, contributors }),
    };
};