import { colors } from "@cliffy/ansi/colors";
import { Command, ValidationError } from "@cliffy/command";
import { maxOf } from "@std/collections";

import { search } from "../search.ts";
import { print } from "../utils.ts";
import { Hsh } from "../hsh.ts";
import { iconForEntry } from "../entry.ts";

function register(cmd: Command, hsh: Hsh) {
  cmd
    .command("search", "search notebook")
    .alias("q")
    .option("-a, --all", "search across all notebooks", { default: false })
    .option("-e, --regexp", "search by regex", { default: false })
    .option("-t, --tag <tag>", "include tags", { collect: true })
    .option("-T, --title-only", "only show entry titles", { default: false })
    .arguments("[...terms:string]")
    .action(async ({ all, regexp, titleOnly, tag }, ...terms: string[]) => {
      if (terms.length === 0 && (tag?.length ?? 0) === 0) {
        throw new ValidationError("at least one term or tag must be specified");
      }
      const notebooks = all ? hsh.allNotebooks() : [hsh.getNotebook()];
      const matches = await search(
        notebooks,
        [...terms, ...(tag ?? []).map((t) => `#${t}`)],
        !regexp,
      );
      for (const match of matches) {
        print(
          `[${
            colors.cyan(
              match.entry.folders.length > 0
                ? `${match.entry.folders.join("/")}/`
                : "",
            )
          }${colors.cyan(match.entry.filename)}] ${
            iconForEntry(match.entry)
          }${match.entry.title}`,
        );
        if (titleOnly) continue;
        print("-".repeat(Deno.consoleSize().columns));
        const width = Math.log10(maxOf(match.matches, (m) => m.line)!) + 1;
        for (const line of match.matches) {
          print(
            `${
              colors.green(line.line.toString().padStart(width))
            }: ${line.text}`,
          );
        }
        print();
      }
    });
}

export default { register };