import db from "../sql.mjs";
import lib from "../lib.mjs";
import search from "../routeinc/search.mjs";

const _eps = 20;

export default (router, tpl) => {
  router.get(/^\/search(\/)?$/, lib.auth, async (req, res) => {
    let ret;
    let tag = req.url.qs.tag ?? [];
    let page = req.url.qs.page ?? 1;
    let total = 0;
    let pagination, link;

    if(tag.length > 1) {
      if(tag.startsWith('src:')) {
        total = (await db`
          select count(*) as total
          from "items"
          where src ilike ${'%' + tag.substring(4) + '%'} and active = 'true'
          group by "items".id
        `).length;
      }
      else {
        total = (await db`
          select count(*) as total
          from "tags"
          left join "tags_assign" on "tags_assign".tag_id = "tags".id
          left join "items" on "items".id = "tags_assign".item_id
          where "tags".tag ilike ${'%' + tag + '%'}
          group by "items".id, "tags".tag
        `).length;
      }

      const pages = +Math.ceil(total / _eps);
      const act_page = Math.min(pages, page || 1);
      const offset = Math.max(0, (act_page - 1) * _eps);

      if(tag.startsWith('src:')) {
        ret = await db`
          select *
          from "items"
          where
            src ilike ${'%' + tag.substring(4) + '%'} and
            active = 'true'
          group by "items".id
          order by "items".id desc
          offset ${offset}
          limit ${_eps}
        `;
      }
      else {
        const rows = await db`
          select "items".id, "items".username, "items".mime, "tags".tag
          from "tags"
          left join "tags_assign" on "tags_assign".tag_id = "tags".id
          left join "items" on "items".id = "tags_assign".item_id
          where "tags".tag ilike ${'%' + tag + '%'} and "items".active = 'true'
          group by "items".id, "tags".tag
          offset ${offset}
          limit ${_eps}
        `;
        ret = search(rows, tag);
      }

      const cheat = [];
      for(let i = Math.max(1, act_page - 3); i <= Math.min(act_page + 3, pages); i++)
        cheat.push(i);

      pagination = {
        start: 1,
        end: pages,
        prev: (act_page > 1) ? act_page - 1 : null,
        next: (act_page < pages) ? act_page + 1 : null,
        page: act_page,
        cheat: cheat,
        uff: false
      };
      link = {
        main: `/search/?tag=${tag}`,
        path: '&page='
      };
    }

    res.reply({
      body: tpl.render("search", {
        result: ret,
        totals: await lib.countf0cks(),
        searchstring: tag,
        count: total,
        tmp: null,
        pagination,
        link
      }, req)
    });
  });
};