# PlotKPC.py -- Pamhyr
# Copyright (C) 2023-2024  INRAE
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# -*- coding: utf-8 -*-

from tools import timer
from View.Tools.PamhyrPlot import PamhyrPlot

from PyQt5.QtCore import (
    QCoreApplication
)

from matplotlib.collections import LineCollection

_translate = QCoreApplication.translate


class PlotKPC(PamhyrPlot):
    def __init__(self, canvas=None, trad=None, toolbar=None,
                 river=None, reach=None, profile=None,
                 parent=None):
        super(PlotKPC, self).__init__(
            canvas=canvas,
            trad=trad,
            data=river,
            toolbar=toolbar,
            parent=parent
        )

        self._current_reach = reach
        self._current_profile = profile

        self.label_x = self._trad["unit_kp"]
        self.label_y = self._trad["unit_elevation"]

        self._isometric_axis = False

        self._auto_relim_update = True
        self._autoscale_update = True

    @property
    def river(self):
        return self.data

    @river.setter
    def river(self, river):
        self.data = river

    @timer
    def draw(self, highlight=None):
        self.init_axes()

        if self.data is None:
            self.profile = None
            self.line_kp_zmin_zmax = None
            self.line_kp_zmin = None
            return

        if self._current_reach is None:
            self.profile = None
            self.line_kp_zmin_zmax = None
            self.line_kp_zmin = None
            return

        self.draw_data()
        self.draw_current()

        self.idle()
        self._init = True

    def draw_data(self):
        reach = self._current_reach

        kp = reach.reach.get_kp()
        z_min = reach.reach.get_z_min()
        z_max = reach.reach.get_z_max()

        self.line_kp_zmin, = self.canvas.axes.plot(
            kp, z_min,
            color=self.color_plot_river_bottom,
            lw=1.
        )

        if len(kp) != 0:
            self.line_kp_zmin_zmax = self.canvas.axes.vlines(
                x=kp,
                ymin=z_min, ymax=z_max,
                color=self.color_plot,
                lw=1.
            )

    def draw_current(self):
        if self._current_profile is None:
            self.profile = None
        else:
            kp = [self._current_profile.kp,
                  self._current_profile.kp]
            min_max = [self._current_profile.z_min(),
                       self._current_profile.z_max()]

            self.profile = self.canvas.axes.plot(
                kp, min_max,
                color=self.color_plot_current,
                lw=1.
            )

    def set_reach(self, reach):
        self._current_reach = reach
        self._current_profile = None
        self.update()

    def set_profile(self, profile):
        self._current_profile = profile
        self.update_current_profile()

    def update(self):
        self.draw()

    def update_current_profile(self):
        reach = self._current_reach
        kp = reach.reach.get_kp()
        z_min = reach.reach.get_z_min()
        z_max = reach.reach.get_z_max()

        if self.profile is None:
            self.draw()
        else:
            self.profile.set_data(
                [self._current_profile.kp, self._current_profile.kp],
                [self._current_profile.z_min(), self._current_profile.z_max()],
            )

            self.update_idle()

    def clear(self):
        if self.profile is not None:
            self.profile[0].set_data([], [])

        if self.line_kp_zmin_zmax is not None:
            self.line_kp_zmin_zmax.remove()
            self.line_kp_zmin_zmax = None

        if self.line_kp_zmin is not None:
            self.line_kp_zmin.set_data([], [])

        self.canvas.figure.canvas.draw_idle()

    def clear_profile(self):
        if self.profile is not None:
            self.profile.set_data([], [])

        self.canvas.figure.canvas.draw_idle()