/* eslint-disable func-names, no-restricted-syntax, no-use-before-define, no-param-reassign, new-cap, no-underscore-dangle, no-return-assign, prefer-arrow-callback, prefer-template, no-else-return, no-shadow */

import $ from 'jquery';
import _ from 'underscore';
import { extent, max } from 'd3-array';
import { select, event as d3Event } from 'd3-selection';
import { scaleTime, scaleLinear } from 'd3-scale';
import { axisLeft, axisBottom } from 'd3-axis';
import { area } from 'd3-shape';
import { brushX } from 'd3-brush';
import { timeParse } from 'd3-time-format';
import { dateTickFormat } from '~/lib/utils/tick_formats';

const d3 = {
  extent,
  max,
  select,
  scaleTime,
  scaleLinear,
  axisLeft,
  axisBottom,
  area,
  brushX,
  timeParse,
};

const hasProp = {}.hasOwnProperty;
const extend = function(child, parent) {
  for (const key in parent) {
    if (hasProp.call(parent, key)) child[key] = parent[key];
  }
  function ctor() {
    this.constructor = child;
  }
  ctor.prototype = parent.prototype;
  child.prototype = new ctor();
  child.__super__ = parent.prototype;
  return child;
};

export const ContributorsGraph = (function() {
  function ContributorsGraph() {}

  ContributorsGraph.prototype.MARGIN = {
    top: 20,
    right: 10,
    bottom: 30,
    left: 40,
  };

  ContributorsGraph.prototype.x_domain = null;

  ContributorsGraph.prototype.y_domain = null;

  ContributorsGraph.prototype.dates = [];

  ContributorsGraph.prototype.determine_width = function(baseWidth, $parentElement) {
    const parentPaddingWidth =
      parseFloat($parentElement.css('padding-left')) +
      parseFloat($parentElement.css('padding-right'));
    const marginWidth = this.MARGIN.left + this.MARGIN.right;
    return baseWidth - parentPaddingWidth - marginWidth;
  };

  ContributorsGraph.set_x_domain = function(data) {
    return (ContributorsGraph.prototype.x_domain = data);
  };

  ContributorsGraph.set_y_domain = function(data) {
    return (ContributorsGraph.prototype.y_domain = [
      0,
      d3.max(data, function(d) {
        return (d.commits = d.commits || d.additions || d.deletions);
      }),
    ]);
  };

  ContributorsGraph.init_x_domain = function(data) {
    return (ContributorsGraph.prototype.x_domain = d3.extent(data, function(d) {
      return d.date;
    }));
  };

  ContributorsGraph.init_y_domain = function(data) {
    return (ContributorsGraph.prototype.y_domain = [
      0,
      d3.max(data, function(d) {
        return (d.commits = d.commits || d.additions || d.deletions);
      }),
    ]);
  };

  ContributorsGraph.init_domain = function(data) {
    ContributorsGraph.init_x_domain(data);
    return ContributorsGraph.init_y_domain(data);
  };

  ContributorsGraph.set_dates = function(data) {
    return (ContributorsGraph.prototype.dates = data);
  };

  ContributorsGraph.prototype.set_x_domain = function() {
    return this.x.domain(this.x_domain);
  };

  ContributorsGraph.prototype.set_y_domain = function() {
    return this.y.domain(this.y_domain);
  };

  ContributorsGraph.prototype.set_domain = function() {
    this.set_x_domain();
    return this.set_y_domain();
  };

  ContributorsGraph.prototype.create_scale = function(width, height) {
    this.x = d3
      .scaleTime()
      .range([0, width])
      .clamp(true);
    return (this.y = d3
      .scaleLinear()
      .range([height, 0])
      .nice());
  };

  ContributorsGraph.prototype.draw_x_axis = function() {
    return (
      this.svg
        .append('g')
        .attr('class', 'x axis')
        /* eslint-disable-next-line @gitlab/i18n/no-non-i18n-strings */
        .attr('transform', 'translate(0, ' + this.height + ')')
        .call(this.x_axis)
    );
  };

  ContributorsGraph.prototype.draw_y_axis = function() {
    return this.svg
      .append('g')
      .attr('class', 'y axis')
      .call(this.y_axis);
  };

  ContributorsGraph.prototype.set_data = function(data) {
    return (this.data = data);
  };

  return ContributorsGraph;
})();

export const ContributorsMasterGraph = (function(superClass) {
  extend(ContributorsMasterGraph, superClass);

  function ContributorsMasterGraph(data1) {
    const $parentElement = $('#contributors-master');

    this.data = data1;
    this.update_content = this.update_content.bind(this);
    this.width = this.determine_width($('.js-graphs-show').width(), $parentElement);
    this.height = 200;
    this.x = null;
    this.y = null;
    this.x_axis = null;
    this.y_axis = null;
    this.area = null;
    this.svg = null;
    this.brush = null;
    this.x_max_domain = null;
  }

  ContributorsMasterGraph.prototype.process_dates = function(data) {
    const dates = this.get_dates(data);
    this.parse_dates(data);
    return ContributorsGraph.set_dates(dates);
  };

  ContributorsMasterGraph.prototype.get_dates = function(data) {
    return _.pluck(data, 'date');
  };

  ContributorsMasterGraph.prototype.parse_dates = function(data) {
    const parseDate = d3.timeParse('%Y-%m-%d');
    return data.forEach(function(d) {
      return (d.date = parseDate(d.date));
    });
  };

  ContributorsMasterGraph.prototype.create_scale = function() {
    return ContributorsMasterGraph.__super__.create_scale.call(this, this.width, this.height);
  };

  ContributorsMasterGraph.prototype.create_axes = function() {
    this.x_axis = d3
      .axisBottom()
      .scale(this.x)
      .tickFormat(dateTickFormat);
    return (this.y_axis = d3
      .axisLeft()
      .scale(this.y)
      .ticks(5));
  };

  ContributorsMasterGraph.prototype.create_svg = function() {
    this.svg = d3
      .select('#contributors-master')
      .append('svg')
      .attr('width', this.width + this.MARGIN.left + this.MARGIN.right)
      .attr('height', this.height + this.MARGIN.top + this.MARGIN.bottom)
      .attr('class', 'tint-box')
      .append('g')
      /* eslint-disable-next-line @gitlab/i18n/no-non-i18n-strings */
      .attr('transform', 'translate(' + this.MARGIN.left + ',' + this.MARGIN.top + ')');
    return this.svg;
  };

  ContributorsMasterGraph.prototype.create_area = function(x, y) {
    return (this.area = d3
      .area()
      .x(function(d) {
        return x(d.date);
      })
      .y0(this.height)
      .y1(function(d) {
        d.commits = d.commits || d.additions || d.deletions;
        return y(d.commits);
      }));
  };

  ContributorsMasterGraph.prototype.create_brush = function() {
    return (this.brush = d3
      .brushX(this.x)
      .extent([[this.x.range()[0], 0], [this.x.range()[1], this.height]])
      .on('end', this.update_content));
  };

  ContributorsMasterGraph.prototype.draw_path = function(data) {
    return this.svg
      .append('path')
      .datum(data)
      .attr('class', 'area')
      .attr('d', this.area);
  };

  ContributorsMasterGraph.prototype.add_brush = function() {
    return this.svg
      .append('g')
      .attr('class', 'selection')
      .call(this.brush)
      .selectAll('rect')
      .attr('height', this.height);
  };

  ContributorsMasterGraph.prototype.update_content = function() {
    // d3Event.selection replaces the function brush.empty() calls
    if (d3Event.selection != null) {
      ContributorsGraph.set_x_domain(d3Event.selection.map(this.x.invert));
    } else {
      ContributorsGraph.set_x_domain(this.x_max_domain);
    }
    return $('#brush_change').trigger('change');
  };

  ContributorsMasterGraph.prototype.draw = function() {
    this.process_dates(this.data);
    this.create_scale();
    this.create_axes();
    ContributorsGraph.init_domain(this.data);
    this.x_max_domain = this.x_domain;
    this.set_domain();
    this.create_area(this.x, this.y);
    this.create_svg();
    this.create_brush();
    this.draw_path(this.data);
    this.draw_x_axis();
    this.draw_y_axis();
    return this.add_brush();
  };

  ContributorsMasterGraph.prototype.redraw = function() {
    this.process_dates(this.data);
    ContributorsGraph.set_y_domain(this.data);
    this.set_y_domain();
    this.svg.select('path').datum(this.data);
    this.svg.select('path').attr('d', this.area);
    return this.svg.select('.y.axis').call(this.y_axis);
  };

  return ContributorsMasterGraph;
})(ContributorsGraph);

export const ContributorsAuthorGraph = (function(superClass) {
  extend(ContributorsAuthorGraph, superClass);

  function ContributorsAuthorGraph(data1) {
    const $parentElements = $('.person');

    this.data = data1;
    // Don't split graph size in half for mobile devices.
    if ($(window).width() < 790) {
      this.width = this.determine_width($('.js-graphs-show').width(), $parentElements);
    } else {
      this.width = this.determine_width($('.js-graphs-show').width() / 2, $parentElements);
    }
    this.height = 200;
    this.x = null;
    this.y = null;
    this.x_axis = null;
    this.y_axis = null;
    this.area = null;
    this.svg = null;
    this.list_item = null;
  }

  ContributorsAuthorGraph.prototype.create_scale = function() {
    return ContributorsAuthorGraph.__super__.create_scale.call(this, this.width, this.height);
  };

  ContributorsAuthorGraph.prototype.create_axes = function() {
    this.x_axis = d3
      .axisBottom()
      .scale(this.x)
      .ticks(8)
      .tickFormat(dateTickFormat);
    return (this.y_axis = d3
      .axisLeft()
      .scale(this.y)
      .ticks(5));
  };

  ContributorsAuthorGraph.prototype.create_area = function(x, y) {
    return (this.area = d3
      .area()
      .x(function(d) {
        const parseDate = d3.timeParse('%Y-%m-%d');
        return x(parseDate(d));
      })
      .y0(this.height)
      .y1(
        (function(_this) {
          return function(d) {
            if (_this.data[d] != null) {
              return y(_this.data[d]);
            } else {
              return y(0);
            }
          };
        })(this),
      ));
  };

  ContributorsAuthorGraph.prototype.create_svg = function() {
    const persons = document.querySelectorAll('.person');
    this.list_item = persons[persons.length - 1];
    this.svg = d3
      .select(this.list_item)
      .append('svg')
      .attr('width', this.width + this.MARGIN.left + this.MARGIN.right)
      .attr('height', this.height + this.MARGIN.top + this.MARGIN.bottom)
      .attr('class', 'spark')
      .append('g')
      /* eslint-disable-next-line @gitlab/i18n/no-non-i18n-strings */
      .attr('transform', 'translate(' + this.MARGIN.left + ',' + this.MARGIN.top + ')');
    return this.svg;
  };

  ContributorsAuthorGraph.prototype.draw_path = function(data) {
    return this.svg
      .append('path')
      .datum(data)
      .attr('class', 'area-contributor')
      .attr('d', this.area);
  };

  ContributorsAuthorGraph.prototype.draw = function() {
    this.create_scale();
    this.create_axes();
    this.set_domain();
    this.create_area(this.x, this.y);
    this.create_svg();
    this.draw_path(this.dates);
    this.draw_x_axis();
    return this.draw_y_axis();
  };

  ContributorsAuthorGraph.prototype.redraw = function() {
    this.set_domain();
    this.svg.select('path').datum(this.dates);
    this.svg.select('path').attr('d', this.area);
    this.svg.select('.x.axis').call(this.x_axis);
    return this.svg.select('.y.axis').call(this.y_axis);
  };

  return ContributorsAuthorGraph;
})(ContributorsGraph);
