# Source code for pymzml.plot

    # -*- coding: utf-8 -*-
    # encoding: utf-8
    """
    Plotting functions for pymzML.
    The Factory object can hold several plots with several data traces each.
    The data can be visualized as an interactive plotly plot or be exported as JSON.
    """

    # pymzml
    #
    # Copyright (C) 2010-2016 M. Kösters, C. Fufezan, S. Schulze
    #
    #    This program is free software: you can redistribute it and/or modify
    #    it under the terms fo 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 <http://www.gnu.org/licenses/>.

    from __future__ import print_function
    import sys
    import math
    try:
        import plotly.offline as plt
        import plotly.graph_objs as go
        from plotly import tools
    except:
        print('[ pymzML ] Warning: no plotly installed ...')
    import pymzml

    class Factory(object):
        def __init__(self, filename=None):
            """
            Interface to visualize m/z or profile data using plotly (https://plot.ly/).

            Arguments:
                filename (str): Name for the output file. Default = "spectrum_plot.html"

            """
            self.filename        = filename
            self.plots           = []
            self.titles          = []
            self.lookup          = dict()
            self.y_max           = []
            self.y_min           = []
            self.x_max           = []
            self.x_min           = []
            self.offset          = 1
            self.MS_precisions   = []
            self.function_mapper = {
                '-__splineOffset__0' : self.__return_neg_offset_0,
                'max_intensity'      : self.__return_max_y,
            }

        def __return_max_y(self, i):
            """
            """
            return self.y_max[i]

        def __return_neg_offset_0(self, i):
            """
            """
            return .0 - (self.y_max[i] * (self.offset * 0.05))

        def new_plot(
            self,
            MS_precision = '5e-6',
            title = None
        ):
            """
            Add new plot to the plotting Factory.
            Every plot will be put into the x * 2 grid of one single figure.

            Keyword Arguments:
                title (str): an optional title that will be printed above the plot
                MS_precision (float): measuring MS_precision used in handler.
                    Default 5e-6.

            Note:
                Old function newPlot() is still working. However, the new syntax
                should be used.

            """
            self.MS_precisions.append(MS_precision)
            self.plots.append([])
            self.titles.append(title)
            return

        def newPlot(self, MS_precision = '5e-6', title = None ):
            """Deprecated since version 1.2."""
            # Is this ok, pass the Factory.self to Spectrum class???
            # Id just make deprecation warning a function independent of any class
            # Also, this just looks wrong
            pymzml.spec.Spectrum.deprecation_warning(
                self,
                function_name = sys._getframe().f_code.co_name
            )
            self.new_plot(
                MS_precision = MS_precision,
                title     = title
            )

        def add(
            self,
            data,
            color    = (0, 0, 0),
            style    = 'sticks',
            mz_range = None,
            int_range= None,
            opacity  = 0.8,
            dash     = 'solid',
            name     = None,
            plot_num = -1,
            title    = None
        ):
            """
            Add data to the graph.

            Arguments:
                data (list): The data added to the graph. Must be list of  tuples with
                    the following format. Note that i can be set to 'max_intensity' for
                    setting the label position to the maximum intensity.
                        *   (mz,i) for all styles, except label,
                        *   (mz,i, string) for label.hoverinfo, .sticks and .triangle
                        *   (mz1, mz2, i, string) for label.linear and .spline

            Keyword Arguments:
                color (tuple): color encoded in RGB. Default = (0,0,0)
                style (str): plotting style. Default = "sticks".
                    Currently supported styles are:
                        *   'lines':
                            Datapoints connected by lines
                        *   'points':
                            Datapoints without connection
                        *   'sticks':
                            Vertical line at given m/z (corresponds to centroided peaks)
                        *   'triangle' (MS_precision, micro, tiny, small, medium, big):
                            The top of the triangle corresponds to the given m/z, the width
                            corresponds to he given format, e.g. 'triangle.MS_precision'
                        *   'label.hoverinfo':
                            Label string appears as plotly hover info
                        *   'label.linear'   (top, medium or bottom)
                        *   'label.spline'   (top, medium or bottom)
                        *   'label.sticks'
                        *   'label.triangle' (small, medium or big)
                mz_range (list): Boundaries that should be added to the current
                    plot
                int_range (list): Boundaries that should be added to the current
                    plot
                opacity (float): opacity of the data points
                dash (str): type of line ('solid', 'dash', 'longdash', 'dot', 'dashdot', 'longdashdot')
                name (str): name of data in legend
                plot_num (int): Add data to plot[plot_num]
                title (str): an optional title that will be printed above the plot

            Note:
                The mz_range and int_range in the add() function sets the limits of datapoints
                added to the plot. This is in contrast to defining a range in the layout, which
                only defines the area that is depicted (i.e. the zoom) but still adds the datapoints to the plot
                (can be seen by zooming out).

            """
            if len(self.plots) == 0:
                self.new_plot(title=title)
            if mz_range is None:
                mz_range = [-float('Inf'), float('Inf')]
            if int_range is None:
                int_range = [-float('Inf'), float('Inf')]
            if len(self.x_max) < len(self.plots):
                self.x_max.append(mz_range[1])
                self.x_min.append(mz_range[0])
            if len(self.y_max) < len(self.plots):
                self.y_max.append(int_range[1])
                self.y_min.append(int_range[0])

            # Init variables
            filling      = None
            mode         = 'lines'
            x_values     = []
            y_values     = []
            txt          = []

            style        = style.split('.')
            MS_precision = float(self.MS_precisions[plot_num])

            if len(style) == 3:
                pos = style[2]
                available_pos = [
                    'MS_precision',
                    'micro',
                    'tiny',
                    'small',
                    'medium',
                    'big',
                    'top',
                    'bottom'
                ]
                if pos not in available_pos:
                    raise Exception(
                        'Position must one of the following: {0}'.format(
                            available_pos
                        )
                    )
            else:
                pos = None
            if style[0] == 'label':
                mode = 'text+lines'
                if len(data[0]) < 3:
                    raise Exception(
                        '''
                        Must have at least (mz, i, annotation) in data
                        when using labels
                        '''
                    )
                if style[1]  == 'hoverinfo':
                    shape     = 'linear'
                    mode      = None
                    filling   = None
                    for data_tuple in data:
                        x_values.append(data_tuple[0])
                        y_values.append(data_tuple[1])
                        txt.append(data_tuple[2])

                elif style[1] == 'sticks':
                    shape = 'linear'
                    filling = 'tozeroy'
                    for x in data:
                        y_pos = x[1]
                        x_values += x[0], x[0], x[0], None
                        y_values += .0, y_pos, .0, None
                        txt     += None, x[2], None, None

                elif style[1] == 'triangle':
                    if not pos:
                        pos = 'medium'
                    triangle_pos_list = [
                        'MS_precision',
                        'micro',
                        'tiny',
                        'small',
                        'medium',
                        'big'
                    ]
                    if pos not in triangle_pos_list:
                        raise Exception(
                            'Position must be in {0}'.format(
                                triangle_pos_list
                            )
                        )

                    shape = 'linear'
                    filling = 'tozeroy'
                    for x in data:
                        x_max = self.x_max[plot_num]
                        y_max = x[1]
                        y_values += .0, y_max, .0, None
                        txt += None, x[2], None, None

                        if pos == 'MS_precision':
                            x_values += x[0] - (x[0] * MS_precision), x[0], x[0] + \
                            (x[0] * MS_precision), None
                            continue
                        elif pos =='micro':
                            rel_width = 1 / float(10000)
                        elif pos =='tiny':
                            rel_width = 1 / float(2000)
                        elif pos == 'small':
                            rel_width = 1 / float(200)
                        elif pos == 'medium':
                            rel_width = 1 / float(100)
                        elif pos == 'big':
                            rel_width = 1 / float(50)
                        x_values += x[0] - \
                            (x_max * rel_width), x[0], x[0] + (x_max * rel_width), None

                elif style[1] == 'spline':
                    mode  = 'lines+markers+text'
                    shape = 'spline'
                    txt   = []
                    if not pos:
                        pos = 'top'
                    for x in data:
                        if x[2] == 'max_intensity':
                            y_max = self.y_max[plot_num]
                        else:
                            y_max = x[1]
                        if pos == 'top':
                            y_pos = y_max
                            offset = y_max + (y_max * 0.1)

                        elif pos == 'medium':
                            print(''''
                                {0}
                                is not working atm for
                                {1}
                                '''.format(
                                    pos,
                                    style
                                )
                            )
                            sys.exit(0)
                            y_pos = x[2] / 2
                            offset = '__splineOffset__'

                        elif pos == 'bottom':
                            y_pos = .0
                            offset = '-__splineOffset__0'

                        x_values += x[0], (x[0] + x[1]) / 2, x[1], None
                        y_values += y_pos, str(offset), y_pos, None
                        txt += None, x[3], None, None

                elif style[1] == 'linear':
                    shape = 'linear'
                    if not pos:
                        pos = 'bottom'
                    for x in data:
                        if x[2] == 'max_intensity':
                            y_max = self.y_max[plot_num]
                        else:
                            y_max = x[1]
                        if pos == 'top':
                            y_pos = y_max
                            offset = y_max + (y_max * 0.1)
                        elif pos == 'medium':
                            print(''''
                                {0}
                                is not working atm for
                                {1}
                                '''.format(
                                    pos,
                                    style
                                )
                            )
                            sys.exit(0)
                            y_pos = x[2] / 2
                            offset = '+__splineOffset__'
                        elif pos == 'bottom':
                            y_pos = .0
                            offset = '-__splineOffset__0'

                        x_values += x[0], (x[0] + x[1]) / 2, x[1], None
                        y_values += str(offset), str(offset), str(offset), None
                        txt += None, x[3], None, None

                # elif style[1] == 'lines':
                #         shape = 'linear'
                #         filling = 'tozeroy'
                #         for x in data:
                #             y_pos = 'self.y_max[i]'
                #             x_values += x[0], x[0], x[0], None
                #             y_values += .0, y_pos, .0, None
                #             txt     += None, x[2], None, None

                else:
                    raise Exception(
                        '''
                        Unknown label type
                        Currently supported are:
                        -> linear
                        -> spline
                        -> sticks
                        -> triangle
                        '''
                    )

            elif style[0] in ['sticks', 'triangle', 'lines', 'points']:
                x_vals = [mz for mz, i in data if mz_range[0] <= mz <= mz_range[1] and int_range[0] <= i <= int_range[1]]
                y_vals = [i for mz, i in data if mz_range[0] <= mz <= mz_range[1] and int_range[0] <= i <= int_range[1]]
                y_max = max(y_vals)
                y_min = min(y_vals)
                x_max = max(x_vals)
                x_min = min(x_vals)

                if self.x_max[plot_num] > x_max:
                    self.x_max[plot_num] = x_max
                if self.x_min[plot_num] < x_min:
                    self.x_min[plot_num] = x_min
                if self.y_max[plot_num] > y_max:
                    self.y_max[plot_num] = y_max
                if self.y_min[plot_num] < y_min:
                    self.y_min[plot_num] = y_min

                if style[0] == 'sticks':
                    shape = 'linear'
                    mode = 'lines'
                    filling = 'tozeroy'
                    for x in zip(x_vals, y_vals):
                        y_pos   = x[1]
                        x_values += x[0], x[0], x[0], None
                        y_values += .0, y_pos, .0, None

                elif style[0] == 'triangle':
                    if len(style) == 2:
                        pos = style[1]
                    else:
                        pos = 'medium'
                    triangle_pos_list = [
                        'MS_precision',
                        'micro',
                        'tiny',
                        'small',
                        'medium',
                        'big'
                    ]
                    if pos not in triangle_pos_list:
                        raise Exception(
                            'Position must be in {0}'.format(
                                triangle_pos_list
                            )
                        )
                    shape = 'linear'
                    filling = 'tozeroy'
                    for x in zip(x_vals, y_vals):
                        x_max = self.x_max[plot_num]
                        y_pos = x[1]
                        y_values += .0, y_pos, .0, None
                        if pos == 'MS_precision':
                            x_values += x[0] - (x[0] * MS_precision), x[0], x[0] + \
                            (x[0] * MS_precision), None
                            continue
                        elif pos =='micro':
                            rel_width = 1 / float(10000)
                        elif pos =='tiny':
                            rel_width = 1 / float(2000)
                        elif pos == 'small':
                            rel_width = 1 / float(200)
                        elif pos == 'medium':
                            rel_width = 1 / float(100)
                        elif pos == 'big':
                            rel_width = 1 / float(50)
                        x_values += x[0] - \
                            (x_max * rel_width), x[0], x[0] + (x_max * rel_width), None

                elif style[0] == 'lines':
                    mode = 'lines'
                    shape = 'linear'
                    for x in zip(x_vals, y_vals):
                        x_values.append(x[0])
                        y_values.append(x[1])

                elif style[0] == 'points':
                    mode = 'markers'
                    shape = ' linear'
                    x_values = x_vals
                    y_values = y_vals

            else:
                raise Exception(
                    '''
                    Invalid plotting style
                    Currently supported are:
                    -> lines
                    -> points
                    -> sticks
                    -> triangle
                    '''
                )

            trace = go.Scatter(
                {
                    'x': x_values,
                    'y': y_values,
                    'xaxis': {
                        'range': mz_range,
                        'autorange':False,
                    },
                    'yaxis': {
                        'range': int_range,
                        'autorange':False,
                    },
                    'text': txt,
                    'textfont': {
                        'family': 'Helvetica',
                        'size': 10,
                        'color': '#000000'
                    },
                    'textposition': 'top center',
                    'visible': 'True',
                    'marker': {
                        'size'  : 10,
                        'color' : 'rgba'+str((color[0], color[1], color[2], opacity)),
                    },
                    'mode': mode,
                    'name': name,
                    'line': {
                        'color': 'rgba'+str((color[0], color[1], color[2], opacity)),
                        'width': 1,
                        'shape': shape,
                        'dash'  : dash,
                    },
                    'fill': filling,
                    'fillcolor': {
                        'color' : 'rgba' + str((color[0], color[1], color[2], opacity)),
                        'opacity' : opacity,
                    },
                    'opacity': opacity,
                }
            )

            self.plots[plot_num].append(trace)

        def info(self):
            """
            Prints summary about the plotting factory, i.e. how many plots and how
            many datasets per plot.
            """
            print(
                """
                Factory holds {0} unique plots
                """.format(
                    len(self.plots)
                )
            )
            for i, plot in enumerate(self.plots):
                print(
                    "\t\tPlot {0} holds {1} unique datasets".format(
                        i,
                        len(plot)
                    )
                )
                for j, dataset in enumerate(plot):
                    print("\t\t\tDataset {0} holds {1} datapoints".format(
                        j,
                        len(dataset['x'])
                    ))

            print()
            return

        def save(self, filename=None, mz_range=None, int_range=None, layout=None):
            """
            Saves all plots and their data points that have been added to the
            plotFactory.

            Keyword Arguments:
                filename (str): Name for the output file. Default = "spectrum_plot.html"
                mz_range (list): m/z range which should be considered [start, end].
                    Default = None
                int_range (list): intensity range which should be considered [min, max].
                    Default = None
                layout (dict): dictionary containing layout information in plotly style

            Note:
                mz_range and int_range defined here will be applied to all subplots in
                the current plot, i.e. ranges defined when adding a subplot will be
                overwritten. To avoid this, a list of lists can be given in the order
                corresponding to the subplots.
            """
            plot_number = len(self.plots)
            rows, cols = int(math.ceil(plot_number / float(2))), 2
            if plot_number % 2 == 0:
                my_figure = tools.make_subplots(
                    rows=rows,
                    cols=cols,
                    vertical_spacing=0.6 / rows,
                    subplot_titles   = self.titles
                )
            else:
                specs = [[{}, {}] for x in range(rows - 1)]
                specs.append([{'colspan': 2}, None])
                my_figure = tools.make_subplots(
                    rows             = rows,
                    cols             = cols,
                    vertical_spacing = 0.6 / rows,
                    specs            = specs,
                    subplot_titles   = self.titles
                )

            for i, plot in enumerate(self.plots):
                print(int(math.floor((i / 2) + 1)), (i % 2) + 1)
                for j, trace in enumerate(plot):
                    trace['y'] = [
                        self.function_mapper[x](i) if x in self.function_mapper else x for x in trace['y']
                    ]
                    my_figure.append_trace(
                        trace,
                        int(math.floor((i / 2) + 1)),
                        (i % 2) + 1
                    )

            for i in range(plot_number):
                xaxis_key = 'xaxis{0}'.format(i + 1)
                if mz_range:
                    if mz_range[0] == list or mz_range[0] == tuple:
                        # if list and not list of lists, apply same for all
                        my_figure['layout'][xaxis_key].update(range=mz_range[i])
                        my_figure['layout'][xaxis_key]['autorange'] = False
                    elif mz_range[0] == int or mz_range[0] == float:
                        my_figure['layout'][xaxis_key]['range'] = mz_range
                        my_figure['layout'][xaxis_key]['autorange'] = False
                yaxis_key = 'yaxis{0}'.format(i + 1)
                if int_range:
                    if int_range[0] == list or int_range[0] == tuple:
                        # if list and not list of lists, apply same for all
                        my_figure['layout'][yaxis_key].update(range=int_range[i])
                        my_figure['layout'][yaxis_key]['autorange'] = False
                    elif int_range[0] == int or int_range[0] == float:
                        my_figure['layout'][yaxis_key]['range'] = int_range
                        my_figure['layout'][yaxis_key]['autorange'] = False

                my_figure['layout'][xaxis_key].update(title='m/z ')
                my_figure['layout'][yaxis_key].update(title='Intensity')
                my_figure['layout'][xaxis_key].update(
                    titlefont=
                    {
                        'color': '#000000',
                        'family': 'Helvetica',
                        'size': '18'
                    }
                )
                my_figure['layout'][yaxis_key].update(
                    titlefont=
                    {
                        'color': '#000000',
                        'family': 'Helvetica',
                        'size': '18'
                    }
                )

            my_figure['layout']['legend'].update(
                font = {
                    'size': 10,
                    'color': '#FF0000'
                }
            )
            if layout:
                my_figure['layout'].update(layout)
            if self.filename is None:
                _filename = "spectrum_plot.html"
            else:
                _filename = self.filename

            if filename is not None:
                # save fkt name definition overrules original filename
                _filename = filename

            plt.plot(
                my_figure,
                filename  = _filename,
                auto_open = False
            )
            return

        def get_data(self):
            """
            Return data and layout in JSON format.

            Returns:
                plots (dict): JSON compatible python dict

            """
            for i, plot in enumerate(self.plots):
                for j, trace in enumerate(plot):
                    self.plots[i][j]['y'] = [
                        self.function_mapper[x](i) if x in self.function_mapper else x for x in trace['y']
                    ]
            return self.plots

    if __name__ == '__main__':
        print(__doc__)