//
// "Pull Requests" section: open pull requests across every discovered
// repository, each expanding into its reviews, comments, and changed files.
//

const builders = require("./builders.js");
const nodes = require("./nodes.js");
const { NodeProvider } = require("./provider.js");

const { node, message, errorNode } = nodes;

class PullRequestsProvider extends NodeProvider {
    roots() {
        const store = this.store;

        if (!store.hasAnyToken) {
            return [message("No token stored. Run “Gitea → Set Token…” to sign in.")];
        }
        if (!store.repos.length) {
            if (store.unmatchedHosts.length) return builders.unmatchedHostNodes(store);
            return [message(store.loading ? "Loading…" : "No Gitea repositories found.")];
        }

        const sections = store.repos.map((repo) => this.repoSection(repo));
        return store.repos.length === 1 ? sections[0].children : sections;
    }

    repoSection(repo) {
        const { items, error } = this.store.pullRequestsFor(repo.key);

        let children;
        if (error) children = [errorNode(error)];
        else if (!items.length) children = [message("No open pull requests.")];
        else children = items.map((pull) => builders.pullRequestNode(this.store, repo, pull));

        return node("repo", repo.fullName, {
            identifier: `pr-repo-${repo.key}`,
            description: items.length ? String(items.length) : "",
            tooltip: repo.htmlUrl,
            contextValue: "repo",
            repo: repo,
            data: { repoKey: repo.key },
            expanded: true,
            children: children,
        });
    }
}

exports.PullRequestsProvider = PullRequestsProvider;