#
# TeamCity UI Implementation
#
# Implements a TeamCity frontend for the BitBake utility, via service messages.
# See https://www.jetbrains.com/help/teamcity/build-script-interaction-with-teamcity.html
#
# Based on ncurses.py and knotty.py, variously by Michael Lauer and Richard Purdie
#
# Copyright (C) 2006 Michael 'Mickey' Lauer
# Copyright (C) 2006-2012 Richard Purdie
# Copyright (C) 2018-2020 Agilent Technologies, Inc.
#
# SPDX-License-Identifier: GPL-2.0-only
#
# Author: Chris Laplante <chris.laplante@agilent.com>

from __future__ import division

import datetime
import logging
import math
import os
import re
import sys
import xmlrpc.client
from collections import deque

import bb
import bb.build
import bb.command
import bb.cooker
import bb.event
import bb.exceptions
import bb.runqueue
from bb.ui import uihelper

logger = logging.getLogger("BitBake")


class TeamCityUI:
    def __init__(self):
        self._block_stack = []
        self._last_progress_state = None

    @classmethod
    def escape_service_value(cls, value):
        """
        Escape a value for inclusion in a service message. TeamCity uses the vertical pipe character for escaping.
        See: https://confluence.jetbrains.com/display/TCD10/Build+Script+Interaction+with+TeamCity#BuildScriptInteractionwithTeamCity-Escapedvalues
        """
        return re.sub(r"(['|\[\]])", r"|\1", value).replace("\n", "|n").replace("\r", "|r")

    @classmethod
    def emit_service_message(cls, message_type, **kwargs):
        print(cls.format_service_message(message_type, **kwargs), flush=True)

    @classmethod
    def format_service_message(cls, message_type, **kwargs):
        payload = " ".join(["{0}='{1}'".format(k, cls.escape_service_value(v)) for k, v in kwargs.items()])
        return "##teamcity[{0} {1}]".format(message_type, payload)

    @classmethod
    def emit_simple_service_message(cls, message_type, message):
        print(cls.format_simple_service_message(message_type, message), flush=True)

    @classmethod
    def format_simple_service_message(cls, message_type, message):
        return "##teamcity[{0} '{1}']".format(message_type, cls.escape_service_value(message))

    @classmethod
    def format_build_message(cls, text, status):
        return cls.format_service_message("message", text=text, status=status)

    def block_start(self, name):
        self._block_stack.append(name)
        self.emit_service_message("blockOpened", name=name)

    def block_end(self):
        if self._block_stack:
            name = self._block_stack.pop()
            self.emit_service_message("blockClosed", name=name)

    def progress(self, message, percent, extra=None):
        now = datetime.datetime.now()
        percent = "{0: >3.0f}".format(percent)

        report = False
        if not self._last_progress_state \
                or (self._last_progress_state[0] == message
                    and self._last_progress_state[1] != percent
                    and (now - self._last_progress_state[2]).microseconds >= 5000) \
                or self._last_progress_state[0] != message:
            report = True
            self._last_progress_state = (message, percent, now)

        if report or percent in [0, 100]:
            self.emit_simple_service_message("progressMessage", "{0}: {1}%{2}".format(message, percent, extra or ""))


class TeamcityLogFormatter(logging.Formatter):
    def format(self, record):
        details = ""
        if hasattr(record, 'bb_exc_formatted'):
            details = ''.join(record.bb_exc_formatted)
        elif hasattr(record, 'bb_exc_info'):
            etype, value, tb = record.bb_exc_info
            formatted = bb.exceptions.format_exception(etype, value, tb, limit=5)
            details = ''.join(formatted)

        if record.levelno in [bb.msg.BBLogFormatter.ERROR, bb.msg.BBLogFormatter.CRITICAL]:
            # ERROR gets a separate errorDetails field
            msg = TeamCityUI.format_service_message("message", text=record.getMessage(), status="ERROR",
                                                    errorDetails=details)
        else:
            payload = record.getMessage()
            if details:
                payload += "\n" + details
            if record.levelno == bb.msg.BBLogFormatter.PLAIN:
                msg = payload
            elif record.levelno == bb.msg.BBLogFormatter.WARNING:
                msg = TeamCityUI.format_service_message("message", text=payload, status="WARNING")
            else:
                msg = TeamCityUI.format_service_message("message", text=payload, status="NORMAL")

        return msg


_evt_list = ["bb.runqueue.runQueueExitWait", "bb.event.LogExecTTY", "logging.LogRecord",
             "bb.build.TaskFailed", "bb.build.TaskBase", "bb.event.ParseStarted",
             "bb.event.ParseProgress", "bb.event.ParseCompleted", "bb.event.CacheLoadStarted",
             "bb.event.CacheLoadProgress", "bb.event.CacheLoadCompleted", "bb.command.CommandFailed",
             "bb.command.CommandExit", "bb.command.CommandCompleted", "bb.cooker.CookerExit",
             "bb.event.MultipleProviders", "bb.event.NoProvider", "bb.runqueue.sceneQueueTaskStarted",
             "bb.runqueue.runQueueTaskStarted", "bb.runqueue.runQueueTaskFailed", "bb.runqueue.sceneQueueTaskFailed",
             "bb.event.BuildBase", "bb.build.TaskStarted", "bb.build.TaskSucceeded", "bb.build.TaskFailedSilent",
             "bb.build.TaskProgress", "bb.event.ProcessStarted", "bb.event.ProcessProgress", "bb.event.ProcessFinished"]


def _log_settings_from_server(server):
    # Get values of variables which control our output
    includelogs, error = server.runCommand(["getVariable", "BBINCLUDELOGS"])
    if error:
        logger.error("Unable to get the value of BBINCLUDELOGS variable: %s" % error)
        raise BaseException(error)
    loglines, error = server.runCommand(["getVariable", "BBINCLUDELOGS_LINES"])
    if error:
        logger.error("Unable to get the value of BBINCLUDELOGS_LINES variable: %s" % error)
        raise BaseException(error)
    return includelogs, loglines


def main(server, eventHandler, params):
    params.updateToServer(server, os.environ.copy())

    includelogs, loglines = _log_settings_from_server(server)

    ui = TeamCityUI()

    helper = uihelper.BBUIHelper()

    console = logging.StreamHandler(sys.stdout)
    errconsole = logging.StreamHandler(sys.stderr)
    format = TeamcityLogFormatter()
    if params.options.quiet == 0:
        forcelevel = None
    elif params.options.quiet > 2:
        forcelevel = bb.msg.BBLogFormatter.ERROR
    else:
        forcelevel = bb.msg.BBLogFormatter.WARNING
    bb.msg.addDefaultlogFilter(console, bb.msg.BBLogFilterStdOut, forcelevel)
    bb.msg.addDefaultlogFilter(errconsole, bb.msg.BBLogFilterStdErr)
    console.setFormatter(format)
    errconsole.setFormatter(format)
    if not bb.msg.has_console_handler(logger):
        logger.addHandler(console)
        logger.addHandler(errconsole)

    if params.options.remote_server and params.options.kill_server:
        server.terminateServer()
        return

    if params.observe_only:
        logger.error("Observe-only mode not supported in this UI")
        return 1

    llevel, debug_domains = bb.msg.constructLogOptions()
    server.runCommand(["setEventMask", server.getEventHandle(), llevel, debug_domains, _evt_list])

    try:
        params.updateFromServer(server)
        cmdline = params.parseActions()
        if not cmdline:
            logger.error("No task given")
            return 1
        if 'msg' in cmdline and cmdline['msg']:
            logger.error(cmdline['msg'])
            return 1
        cmdline = cmdline['action']
        ret, error = server.runCommand(cmdline)
        if error:
            logger.error("{0}: {1}".format(cmdline, error))
            return 1
        elif not ret:
            logger.error("Couldn't get default commandline: {0}".format(re))
            return 1
    except xmlrpc.client.Fault as x:
        logger.error("XMLRPC Fault getting commandline: {0}".format(x))
        return 1

    active_process_total = None
    is_tasks_running = False

    while True:
        try:
            event = eventHandler.waitEvent(0.25)
            if not event:
                continue

            helper.eventHandler(event)

            if isinstance(event, bb.build.TaskBase):
                logger.info(event._message)
            if isinstance(event, logging.LogRecord):
                # Don't report sstate failures as errors, since Yocto will just run the tasks for real
                if event.msg == "No suitable staging package found" or (event.msg.startswith(
                        "Fetcher failure: Unable to find file") and "downloadfilename" in event.msg and "sstate" in event.msg):
                    event.levelno = bb.msg.BBLogFormatter.WARNING
                if event.taskpid != 0:
                    # For "normal" logging conditions, don't show note logs from tasks
                    # but do show them if the user has changed the default log level to
                    # include verbose/debug messages
                    if event.levelno <= bb.msg.BBLogFormatter.NOTE and (event.levelno < llevel or (
                            event.levelno == bb.msg.BBLogFormatter.NOTE and llevel != bb.msg.BBLogFormatter.VERBOSE)):
                        continue

                    # Prefix task messages with recipe/task
                    if event.taskpid in helper.running_tasks and event.levelno != bb.msg.BBLogFormatter.PLAIN:
                        taskinfo = helper.running_tasks[event.taskpid]
                        event.msg = taskinfo['title'] + ': ' + event.msg
                if hasattr(event, 'fn'):
                    event.msg = event.fn + ': ' + event.msg
                logger.handle(event)
            if isinstance(event, bb.build.TaskFailedSilent):
                logger.warning("Logfile for failed setscene task is %s" % event.logfile)
                continue
            if isinstance(event, bb.build.TaskFailed):
                rt = "{0}-{1}:{2}".format(event.pn, event.pv.replace("AUTOINC", "0"), event.task)

                logfile = event.logfile
                if not logfile or not os.path.exists(logfile):
                    TeamCityUI.emit_service_message("buildProblem", description="{0}\nUnknown failure (no log file available)".format(rt))
                    if not event.task.endswith("_setscene"):
                        server.runCommand(["stateForceShutdown"])
                    continue

                details = deque(maxlen=loglines)
                error_lines = []
                if includelogs and not event.errprinted:
                    with open(logfile, "r") as f:
                        while True:
                            line = f.readline()
                            if not line:
                                break
                            line = line.rstrip()
                            details.append(' | %s' % line)
                            # TODO: a less stupid check for errors
                            if (event.task == "do_compile") and ("error:" in line):
                                error_lines.append(line)

                if error_lines:
                    TeamCityUI.emit_service_message("compilationStarted", compiler=rt)
                    for line in error_lines:
                        TeamCityUI.emit_service_message("message", text=line, status="ERROR")
                    TeamCityUI.emit_service_message("compilationFinished", compiler=rt)
                else:
                    TeamCityUI.emit_service_message("buildProblem", description=rt)

                err = "Logfile of failure stored in: %s" % logfile
                if details:
                    ui.block_start("{0} task log".format(rt))
                    # TeamCity seems to choke on service messages longer than about 63800 characters, so if error
                    # details is longer than, say, 60000, batch it up into several messages.
                    first_message = True
                    while details:
                        detail_len = 0
                        batch = deque()
                        while details and detail_len < 60000:
                            # TODO: This code doesn't bother to handle lines that themselves are extremely long.
                            line = details.popleft()
                            batch.append(line)
                            detail_len += len(line)

                        if first_message:
                            batch.appendleft("Log data follows:")
                            first_message = False
                            TeamCityUI.emit_service_message("message", text=err, status="ERROR",
                                                            errorDetails="\n".join(batch))
                        else:
                            TeamCityUI.emit_service_message("message", text="[continued]", status="ERROR",
                                                            errorDetails="\n".join(batch))
                    ui.block_end()
                else:
                    TeamCityUI.emit_service_message("message", text=err, status="ERROR", errorDetails="")

                if not event.task.endswith("_setscene"):
                    server.runCommand(["stateForceShutdown"])

            if isinstance(event, bb.event.ProcessStarted):
                if event.processname in ["Initialising tasks", "Checking sstate mirror object availability"]:
                    active_process_total = event.total
                    ui.block_start(event.processname)
            if isinstance(event, bb.event.ProcessFinished):
                if event.processname in ["Initialising tasks", "Checking sstate mirror object availability"]:
                    ui.progress(event.processname, 100)
                    ui.block_end()
            if isinstance(event, bb.event.ProcessProgress):
                if event.processname in ["Initialising tasks",
                                         "Checking sstate mirror object availability"] and active_process_total != 0:
                    ui.progress(event.processname, event.progress * 100 / active_process_total)
            if isinstance(event, bb.event.CacheLoadStarted):
                ui.block_start("Loading cache")
            if isinstance(event, bb.event.CacheLoadProgress):
                if event.total != 0:
                    ui.progress("Loading cache", math.floor(event.current * 100 / event.total))
            if isinstance(event, bb.event.CacheLoadCompleted):
                ui.progress("Loading cache", 100)
                ui.block_end()
            if isinstance(event, bb.event.ParseStarted):
                ui.block_start("Parsing recipes and checking upstream revisions")
            if isinstance(event, bb.event.ParseProgress):
                if event.total != 0:
                    ui.progress("Parsing recipes", math.floor(event.current * 100 / event.total))
            if isinstance(event, bb.event.ParseCompleted):
                ui.progress("Parsing recipes", 100)
                ui.block_end()
            if isinstance(event, bb.command.CommandCompleted):
                return
            if isinstance(event, bb.command.CommandFailed):
                logger.error(str(event))
                return 1
            if isinstance(event, bb.event.MultipleProviders):
                logger.warning(str(event))
                continue
            if isinstance(event, bb.event.NoProvider):
                logger.error(str(event))
                continue
            if isinstance(event, bb.command.CommandExit):
                return
            if isinstance(event, bb.cooker.CookerExit):
                return
            if isinstance(event, bb.runqueue.sceneQueueTaskStarted):
                if not is_tasks_running:
                    is_tasks_running = True
                    ui.block_start("Running tasks")
                if event.stats.total != 0:
                    ui.progress("Running setscene tasks", (
                            event.stats.completed + event.stats.active + event.stats.failed + 1) * 100 / event.stats.total)
            if isinstance(event, bb.runqueue.runQueueTaskStarted):
                if not is_tasks_running:
                    is_tasks_running = True
                    ui.block_start("Running tasks")
                if event.stats.total != 0:
                    pseudo_total = event.stats.total - event.stats.skipped
                    pseudo_complete = event.stats.completed + event.stats.active - event.stats.skipped + event.stats.failed + 1
                    # TODO: sometimes this gives over 100%
                    ui.progress("Running runqueue tasks", (pseudo_complete) * 100 / pseudo_total,
                            " ({0}/{1})".format(pseudo_complete, pseudo_total))
            if isinstance(event, bb.runqueue.sceneQueueTaskFailed):
                logger.warning(str(event))
                continue
            if isinstance(event, bb.runqueue.runQueueTaskFailed):
                logger.error(str(event))
                return 1
            if isinstance(event, bb.event.LogExecTTY):
                pass
        except EnvironmentError as ioerror:
            # ignore interrupted io
            if ioerror.args[0] == 4:
                pass
        except Exception as ex:
            logger.error(str(ex))

        # except KeyboardInterrupt:
        #     if shutdown == 2:
        #         mw.appendText("Third Keyboard Interrupt, exit.\n")
        #         exitflag = True
        #     if shutdown == 1:
        #         mw.appendText("Second Keyboard Interrupt, stopping...\n")
        #         _, error = server.runCommand(["stateForceShutdown"])
        #         if error:
        #             print("Unable to cleanly stop: %s" % error)
        #     if shutdown == 0:
        #         mw.appendText("Keyboard Interrupt, closing down...\n")
        #         _, error = server.runCommand(["stateShutdown"])
        #         if error:
        #             print("Unable to cleanly shutdown: %s" % error)
        #     shutdown = shutdown + 1
        #     pass