#!/usr/bin/env python3
import argparse, pathlib
from typing import Iterator
from tinygrad.viz import serve as viz
from tinygrad.uop.ops import RewriteTrace
from tinygrad.helpers import temp, ansistrip, colored, time_to_str, ansilen
from test.null.test_viz import load_profile

def optional_eq(val:dict, arg:str|None) -> bool: return arg is None or ansistrip(val["name"]) == arg

def print_data(data:dict) -> None:
  if isinstance(data.get("value"), Iterator):
    for m in data["value"]:
      if m.get("uop"):
        print("Input UOp:")
        print(m["uop"])
      if not m["diff"]: continue
      print("Rewrites:")
      fp = pathlib.Path(m["upat"][0][0])
      print(f"{fp.parent.name}/{fp.name}:{m['upat'][0][1]}")
      print(m["upat"][1])
      for line in m["diff"]:
        color = "red" if line.startswith("-") else "green" if line.startswith("+") else None
        print(colored(line, color))
  if data.get("src") is not None: print(data["src"])

if __name__ == "__main__":
  parser = argparse.ArgumentParser()
  g_mode = parser.add_argument_group("mode")
  g_mode.add_argument("--profile", action="store_true", help="View profile trace")
  g_mode.add_argument("--rewrites", action="store_true", help="View rewrites trace")
  g_profile = parser.add_argument_group("profile options")
  g_profile.add_argument("--device", type=str, default=None, metavar="NAME", help="Select a device (optional name, default: only list names)")
  g_profile.add_argument("--top", type=int, default=10, metavar="N", help="Number of top kernels to show (-1 for all, default: 10)")
  g_rewrites = parser.add_argument_group("rewrites options")
  g_rewrites.add_argument("--select", type=str, default=None, metavar="NAME",
                          help="Select an item within the chosen kernel (optional name, default: only list names)")
  g_common = parser.add_argument_group("common options")
  g_common.add_argument("--kernel", type=str, default=None, metavar="NAME", help="Select a kernel by name (optional name, default: only list names)")
  parser.add_argument("--profile-path", type=pathlib.Path, metavar="PATH", help="Path to profile (optional file, default: latest profile)",
                        default=pathlib.Path(temp("profile.pkl", append_user=True)))
  parser.add_argument("--rewrites-path", type=pathlib.Path, metavar="PATH", help="Path to rewrites (optional file, default: latest rewrites)",
                        default=pathlib.Path(temp("rewrites.pkl", append_user=True)))
  args = parser.parse_args()
  if not args.profile and not args.rewrites:
    parser.print_help()
    exit(0)

  viz.trace = viz.load_pickle(args.rewrites_path, default=RewriteTrace([], [], {}))
  viz.ctxs = viz.get_rewrites(viz.trace)

  if args.profile:
    from tabulate import tabulate
    profile = load_profile(viz.load_pickle(args.profile_path, default=[]))
    agg, total, n = {}, 0, 0
    if args.device is None: print("Select a device:")
    for k,v in profile["layout"].items():
      if not optional_eq({"name":k}, args.device): continue
      print(f"  {k}")
      if args.device is None: continue
      for e in v.get("events", []):
        et = e["dur"]*1e-6
        if args.kernel is not None:
          if ansistrip(e["name"]) == args.kernel and n < 10:
            ptm = colored(time_to_str(et, w=9), "yellow" if et > 0.01 else None) if et is not None else ""
            name = e["name"]+(" " * (46 - ansilen(e["name"])))
            print(f"{name} {ptm}/{(et or 0)*1e3:9.2f}ms  "+e['fmt'].replace('\n', ' | ')+"  ")
            n += 1
        else:
          a = agg.setdefault(e["name"], [0.0, 0])
          a[0] += et
          a[1] += 1
          total += et
    if agg and total > 0:
      items = sorted(agg.items(), key=lambda kv:kv[1][0], reverse=True)
      sel = items if args.top == -1 else items[:args.top]
      table = [[name, time_to_str(t, w=9), c, f"{(t/total*100.0):.2f}%"] for name,(t,c) in sel]
      if args.top != -1 and (other:=items[len(sel):]):
        other_t = total-sum(t for _, (t, _) in sel)
        table.append([f"Other ({len(other)} unique)", time_to_str(other_t, w=9), sum(c for _,(_,c) in other), f"{other_t/total*100.0:.2f}%"])
      print(tabulate(table, headers=["name", "total", "count", "pct"], tablefmt="github"))
    exit(0)

  for k in viz.ctxs:
    if not optional_eq(k, args.kernel): continue
    print(k["name"])
    if args.kernel is None: continue
    for s in k["steps"]:
      if not optional_eq(s, args.select): continue
      print(" "*s["depth"]+s['name']+(f" - {s['match_count']}" if s.get('match_count') is not None else ''))
      if args.select is not None: print_data(viz.get_render(s['query']))