import os
import subprocess
import sys

venv_site_packages = os.path.join(Dir("#").abspath, ".venv", "lib", "python3.12", "site-packages")
if os.path.isdir(venv_site_packages) and venv_site_packages not in sys.path:
  sys.path.insert(0, venv_site_packages)

import imgui
import libusb
# IQ.Pilot patch: iqpilot's iqdbc fork lacks the upstream `get_generated_dbcs()`
# helper. Use the equivalent `create_all(out_dir)` which writes *_generated.dbc
# files directly to disk.
from iqdbc.dbc.generator.generator import create_all as _iqdbc_create_all
from iqdbc.car import Bus
from iqdbc.car.fingerprints import MIGRATION
from iqdbc.car.values import PLATFORMS
from openpilot.common.basedir import BASEDIR

Import('env', 'arch', 'common', 'messaging', 'visionipc', 'cereal', 'replay_lib')

jot_env = env.Clone()
# imgui.MESA_DIR only exists on the larch64 wheel; skip missing paths to avoid an ld search-path warning
jot_env["LIBPATH"] += [p for p in [imgui.MESA_DIR, libusb.LIB_DIR] if os.path.isdir(p)]
jot_env["CPPPATH"] += [imgui.INCLUDE_DIR, libusb.INCLUDE_DIR]
jot_env["CXXFLAGS"] += [
  "-DGLFW_INCLUDE_NONE",
  '-DJOTP_REPO_ROOT=\'"%s"\'' % os.path.realpath(BASEDIR),
]

def materialize_generated_dbcs(target, source, env):
  out_dir = os.path.dirname(str(target[0]))
  os.makedirs(out_dir, exist_ok=True)

  # IQ.Pilot patch: iqdbc's create_all writes *_generated.dbc files directly
  # to out_dir (and clears any stale ones first), matching what upstream's
  # get_generated_dbcs()-based loop produced.
  _iqdbc_create_all(out_dir)

  with open(str(target[0]), "w") as f:
    f.write("ok\n")

  return None

def write_car_fingerprint_to_dbc_header(target, source, env):
  pairs = {}

  for name, platform in sorted(PLATFORMS.items()):
    dbc = platform.config.dbc_dict.get(Bus.pt, "")
    if not dbc and name.startswith("TESLA_"):
      dbc = platform.config.dbc_dict.get(Bus.party, "")
    if not dbc and name == "COMMA_BODY":
      dbc = "comma_body"
    if dbc and name != "MOCK":
      pairs[name] = dbc

  for fingerprint, car in sorted(MIGRATION.items()):
    dbc = pairs.get(str(car), "")
    if dbc:
      pairs[fingerprint] = dbc

  lines = [
    "#pragma once",
    "",
    "#include <string_view>",
    "#include <utility>",
    "",
    "inline constexpr std::pair<std::string_view, std::string_view> kCarFingerprintToDbc[] = {",
  ]
  lines.extend(f'  {{"{fingerprint}", "{dbc}"}},' for fingerprint, dbc in sorted(pairs.items()))
  lines.extend([
    "};",
    "",
    "inline std::string_view dbc_for_car_fingerprint(std::string_view fingerprint) {",
    "  for (const auto &[car_fingerprint, dbc] : kCarFingerprintToDbc) {",
    "    if (car_fingerprint == fingerprint) return dbc;",
    "  }",
    "  return {};",
    "}",
    "",
  ])

  with open(str(target[0]), "w") as f:
    f.write("\n".join(lines))

  return None

def generate_event_extractors(target, source, env):
  subprocess.check_call([
    "python3",
    "tools/jotpluggler/generate_event_extractors.py",
    os.path.realpath(BASEDIR),
    str(target[0]),
  ])
  return None

generated_dbc_stamp = jot_env.Command(f"generated_dbcs/.stamp", [], jot_env.PrettyAction(materialize_generated_dbcs, 'GEN'))
car_fingerprint_to_dbc = jot_env.Command("car_fingerprint_to_dbc.h", [], jot_env.PrettyAction(write_car_fingerprint_to_dbc_header, 'GEN'))
event_extractors = jot_env.Command("generated_event_extractors.h", [
    "generate_event_extractors.py",
    jot_env.Glob("#cereal/*.capnp"),
    jot_env.Glob("#cereal/include/*.capnp"),
  ],
  jot_env.PrettyAction(generate_event_extractors, 'GEN'),
)

libs = [replay_lib, common, messaging, visionipc, cereal, File(f"{imgui.LIB_DIR}/libimgui.a"), File(f"{imgui.LIB_DIR}/libglfw3.a"),
        # IQ.Pilot patch: iqpilot's replay_lib resolves URL/api work via libcurl
        # (vs upstream's Python downloader), so jotpluggler needs to link curl too.
        # iqpilot's api.cc additionally uses OpenSSL primitives (PEM/RSA/SHA256) for
        # JWT signing, and visionipc references OpenCL — both must also be linked.
        "avformat", "avcodec", "avutil", "x264", "yuv", "z", "bz2", "zstd", "curl", "ssl", "crypto", "m", "pthread", "usb-1.0"]
if arch == "Darwin":
  jot_env["FRAMEWORKS"] = ["OpenGL", "OpenCL", "Cocoa", "IOKit", "CoreFoundation", "CoreVideo", "CoreMedia", "VideoToolbox"]
else:
  libs += ["GL", "OpenCL", "dl", "va", "va-drm", "drm"]

program = jot_env.Program("jotpluggler", jot_env.Glob("*.cc"), LIBS=libs)
jot_env.Depends(program, generated_dbc_stamp)
jot_env.Depends(program, car_fingerprint_to_dbc)
jot_env.Depends(program, event_extractors)