import { HZEngineCore, UI } from "../../index.js";

export function basic_commands(core: HZEngineCore) {
  // jump command
  core.script.use((ctx, next) => {
    let strArr = ctx.rawtext.trim().split(/ +/);
    if (strArr.length === 0 || strArr[0].toLowerCase() !== "jump")
      return next();
    if (strArr.length !== 2) throw "Jump Command: incorrect amount of args";
    core.debug.log(`Jump Command: jump to label [${strArr[1]}]`);
    core.script.jumpLabel(strArr[1]);
  });

  // call command
  core.script.use((ctx, next) => {
    let strArr = ctx.rawtext.trim().split(/ +/);
    if (strArr.length === 0 || strArr[0].toLowerCase() !== "call")
      return next();
    if (strArr.length !== 2) throw "Call Command: incorrect amount of args";
    core.debug.log(`Call Command: call label [${strArr[1]}]`);
    core.script.callLabel(strArr[1]);
  });

  // return command
  core.script.use((ctx, next) => {
    let strArr = ctx.rawtext.trim().split(/ +/);
    if (strArr.length === 0 || strArr[0].toLowerCase() !== "return")
      return next();
    if (strArr.length !== 1)
      throw "Return Command: this command can not have args";
    core.debug.log(`Return Command: return`);
    core.script.return();
  });

  // (debug) echo command
  core.script.use((ctx, next) => {
    let str = ctx.rawtext.trim();
    if (!str.startsWith("echo")) return next();
    core.debug.log(`[ECHO] ${core.script.parseString(str.slice(4).trim())}`);
  });

  // say command
  core.script.use((ctx, next) => {
    if (!ctx.rawtext.trim().startsWith('"')) return next();

    function parseSayCommandArgs() {
      if (
        ctx.slicedArgs.length > 0 &&
        ctx.slicedArgs[ctx.slicedArgs.length - 1].str === "nowait"
      ) {
        ctx.slicedArgs = ctx.slicedArgs.slice(0, ctx.slicedArgs.length - 1);
        return {
          wait: false,
        };
      } else {
        return {
          wait: true,
        };
      }
    }

    let parsed = parseSayCommandArgs();

    if (ctx.slicedArgs.length > 2 || ctx.slicedArgs.length < 1) {
      throw `Say Command: incorrect amount of args`;
    }

    if (ctx.slicedArgs.length === 1) {
      core.debug.log(`[SAY] ${ctx.slicedArgs[0].str}`);
      sayAction(core, "", ctx.slicedArgs[0].str, parsed.wait);
    } else {
      if (!ctx.slicedArgs[1].isQuoted)
        throw `Say Command: second arg should be quoted`;
      core.debug.log(`[SAY] ${ctx.slicedArgs[0].str}: ${ctx.slicedArgs[1].str}`);
      sayAction(
        core,
        ctx.slicedArgs[0].str,
        ctx.slicedArgs[1].str,
        parsed.wait
      );
    }

    // if (parsed?.wait) core.system.pause();
  });

  // pause command
  core.script.use((ctx, next) => {
    if (ctx.rawtext.trim().split(" ")[0].toLowerCase() !== "pause")
      return next();
    if (ctx.slicedArgs.length > 2)
      throw `Pause Command: incorrect amount of args`;
    if (ctx.slicedArgs.length === 2) {
      if (
        ctx.slicedArgs[1].isQuoted ||
        !isFinite(Number(ctx.slicedArgs[1].str))
      )
        throw `Pause Command: the second arg must be a number`;
      core.system.pause(Number(ctx.slicedArgs[1].str) * 1000);
    } else core.system.pause();
  });
}

export function sayAction(
  core: HZEngineCore,
  who: string,
  what: string,
  wait: boolean
) {
  const say_view_tag = "hzengine.say";
  const say_view_name = "say";
  what = core.script.parseString(what);
  let message = {
    who,
    what,
  };
  let router = core.ui.getRouter(say_view_tag);
  if (!router) {
    core.ui.addRouter(say_view_tag, "ct");
    router = core.ui.getRouter(say_view_tag)!;
  }
  if (!router.length) {
    // @ts-ignore
    router.push<UI.Message>(say_view_name, message);
  } else {
    // @ts-ignore
    router.update<UI.Message>(message);
  }

  if (wait) {
    
    if (core.config.getConfig("game.autoplay.enable")) {
      let delay =
        (core.config.getConfig("game.autoplay.extra_delay") as number) +
        (core.config.getConfig("game.autoplay.ms_per_char") as number) *
          what.length;
      
      if (isNaN(delay) || !isFinite(delay) || delay < 0) {
        throw `Say Action: AutoPlay Delay Error: ${delay} ms`;
      }
      core.system.pause(delay);
    } else {
      core.system.pause();
    }
  }
}