cn.mapway.document.helper.markdown.ApiDoc2Markdown Maven / Gradle / Ivy

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auto gen doc from api with ui
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package cn.mapway.document.helper.markdown;

import cn.mapway.document.module.ApiDoc;
import cn.mapway.document.module.Entry;
import cn.mapway.document.module.Group;
import cn.mapway.document.module.ObjectInfo;
import org.nutz.lang.Lang;
import org.nutz.lang.Strings;


/**
 * ApiDoc 转 Markdown
 */
public class ApiDoc2Markdown {
    String head(int level, String title) {
        return Strings.dup('#', level) + " " + title;
    }

    String link(String title, String url) {
        return "[" + title + "](" + url + ")";
    }

    String image(String title, String url) {
        return "![" + title + "](" + url + ")";
    }

    String line(String... text) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < text.length; i++) {
            sb.append(text[i]);
        }
        sb.append("\r\n");
        return sb.toString();
    }

    String code(String type, String body) {
        StringBuilder sb = new StringBuilder();
        sb.append("```").append(type);
        sb.append(body);
        sb.append("```\r\n");
        return sb.toString();
    }

    String cite(String text) {
        return "> " + text + "\r\n";
    }

    String bold(String text) {
        return "***" + text + "***";
    }

    Table table(ObjectInfo obj) {
        Table table = new Table();
        table.appendHeader("名称", "类型", "长度", "选项", "解释");
        for (ObjectInfo f : obj.fields) {
            table.addRow(f.name, f.type, f.maxLength + "", f.manditary ? "必填" : "选填", f.title + f.summary);
        }
        return table;
    }

    /**
     * 转换文档
     *
     * @param doc
     * @return
     */
    public String convert(ApiDoc doc) {

        StringBuilder sb = new StringBuilder(3000);
        sb.append(head(1, doc.title)).append(line());
        sb.append(line(doc.author + " " + link("参考系统", doc.homeUrl)));
        sb.append(line(""));

        StringBuilder catalog = new StringBuilder();
        StringBuilder body = new StringBuilder();
        Group root = doc.root;

        int count = exportGroup(root, catalog, body);

        sb.append(catalog.toString()).append(body.toString());
        return sb.toString();
    }

    private int exportGroup(Group group, StringBuilder catalog, StringBuilder body) {

        for (Entry entry : group.entries) {
            exportEntry(entry, catalog, body);
        }

        for (Group subGroup : group.getChildGroups()) {
            exportGroup(subGroup, catalog, body);
        }
        return 0;
    }

    private void exportEntry(Entry entry, StringBuilder catalog, StringBuilder body) {
        catalog.append(line(entry.title));

        body.append(head(3, entry.title)).append(line());
        body.append(cite(entry.summary));
        body.append(line());
        body.append("请求URL: " + entry.url).append(line());
        body.append("请求方法: " + Lang.concat(",", entry.invokeMethods)).append(line("\r\n"));

        body.append(bold("请求参数")).append(line());
        if (entry.input.size() == 0) {
            body.append(bold("无需传递参数")).append(line());
        } else {
            for (ObjectInfo obj : entry.input) {
                body.append(table(obj).toString());
            }
            body.append(code("json\r\n", entry.input.get(0).json + "\r\n"));
        }


        body.append(bold("输出参数")).append(line());
        body.append(table(entry.output).toString()).append(line());
        body.append(code("json\r\n", entry.output.json + "\r\n"));

        body.append(line());
        return;
    }
}