/* This code is copywrite Telos Digital 2025 working for Telos Partners:

https://www.telospartners.com/

It is released under the MIT licence https://opensource.org/license/mit



Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the “Software”), to 
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

*/


function drawBar(id,data) {
//console.log(id);
const svg = d3.select(`${id}`);
const backgroundwidth = +svg.attr("width");
const backgroundradius = 10;
const width = 600;      //+svg.attr("width");
const height = 200;     //+svg.attr("height");
const margin = { top: 40, right: 30, bottom: 60, left: 30 };

// Draw the white background
// Draw the rounded rectangle
svg.append("rect")
  .attr("x", 0)
  .attr("y", 0)
  .attr("width", backgroundwidth)
  .attr("height", height)
  .attr("rx", backgroundradius)
  .attr("ry", backgroundradius)
  .attr("fill", "white");
 // .attr("stroke", "white")
 // .attr("stroke-width", 2);


//const data = {
/* 
data = {
  "-3": 0,
  "-2": 1,
  "-1": 3,
   "0": 0,
   "1": 2,
   "2": 0,
   "3": 10
};
*/
//console.log(data);


const dataArray = Object.entries(data).map(([key, count]) => ({
  key: +key,
  count: count
}));

const x = d3.scaleBand()
  .domain([-3,-2,-1,0,1,2,3])
  .range([margin.left, width - margin.right])
  .padding(0);

const y = d3.scaleLinear()
  .domain([0, d3.max(dataArray, d => d.count)])
  .nice()
  .range([height - margin.bottom, margin.top]);

// X Axis
svg.append("g")
  .attr("transform", `translate(0,${height - margin.bottom})`)
  .call(d3.axisBottom(x)
  .tickSize(0))
  .selectAll("text")
  .attr("x", 0)
  .attr("y", 10)
  .style("text-anchor", "middle")
  .style("font-size", "12px");


// Add the required ticks
const xTicks = d3.scaleLinear()
  .domain([-3.5, 3.5])
  .range([margin.left, width - margin.right]);

svg.append("g")
  .attr("transform", `translate(0,${height - margin.bottom})`)
  .call(d3.axisBottom(xTicks).tickValues(d3.range(-3.5, 4, 1)))
  .selectAll("text")
  .style("visibility", "hidden"); // This hides the labels

// Y Axis
//svg.append("g")
//  .attr("transform", `translate(${margin.left},0)`)
//  .call(d3.axisLeft(y).ticks(5));

// Bars
svg.selectAll(".bar")
  .data(dataArray)
  .enter()
  .append("rect")
  .attr("class", "bar")
  .attr("x", d => x(d.key))
  .attr("y", d => y(d.count))
  .attr("width", x.bandwidth())
  .attr("height", d => y(0) - y(d.count))
  .attr("fill", "#003c4b");    // From brand guidelines

// Labels
svg.selectAll(".label")
  .data(dataArray)
  .enter()
  .append("text")
  .attr("x", d => x(d.key) + x.bandwidth() / 2)
  .attr("y", d => d.count > 0 ? y(d.count) - 5 : y(0))
  .attr("text-anchor", "middle")
  .attr("font-size", "12px")
  .attr("font-style", "italic")
  .attr("fill", "black")
  .text(d => d.count > 0 ? d.count : "");

// Average line
const format = d3.format(".2f");
const totalCount = d3.sum(dataArray, d => d.count);
const weightedSum = d3.sum(dataArray, d => d.key * d.count);
average = totalCount > 0 ? weightedSum / totalCount : 0;

const xLinear = d3.scaleLinear()
  .domain([-3, 3])
  .range([margin.left + x.bandwidth() / 2, width - margin.right - x.bandwidth() / 2]);

const avgX = xLinear(average);
//const avgX = xLinear(-0.50);      // Temporary for testing

svg.append("line")
  .attr("x1", avgX)
  .attr("x2", avgX)
  .attr("y1", y(0)+20)
  .attr("y2", y(d3.max(dataArray, d => d.count)) - 20)
  .attr("stroke", "#e40074")    // From brand guidelines
  .attr("stroke-width", 4)
  .attr("stroke-dasharray", "10,4");

/*
svg.append("text")
  .attr("x", avgX)
  .attr("y", y(d3.max(dataArray, d => d.count)) - 30)
  .attr("text-anchor", "middle")
  .attr("fill", "#e40074")
  .attr("font-size", "12px")
  .text("Average ("+average+")");
*/

// Title beneath the graph
/*
svg.append("text")
  .attr("x", width / 2)
  .attr("y", height - 10)  // Just below the x-axis
  .attr("text-anchor", "middle")
  .attr("font-size", "14px")
  .attr("fill", "black")
  .text("Demo bar graph");
*/


// Add info to right of bar chart
// Oblong settings
const boxx = 610;
const boxy = 60;
const boxwidth = 170;
const boxheight = 80;
const cornerRadius = 10;

// Draw the rounded rectangle
svg.append("rect")
  .attr("x", boxx)
  .attr("y", boxy)
  .attr("width", boxwidth)
  .attr("height", boxheight)
  .attr("rx", cornerRadius)
  .attr("ry", cornerRadius)
  .attr("fill", "white")
  .attr("stroke", "#333")
  .attr("stroke-width", 2);

// Draw the horizontal divider
svg.append("line")
  .attr("x1", boxx)
  .attr("x2", boxx + boxwidth)
  .attr("y1", boxy + boxheight / 2)
  .attr("y2", boxy + boxheight / 2)
  .attr("stroke", "#333")
  .attr("stroke-width", 1);

// Add text to the top half
svg.append("text")
  .attr("x", boxx + boxwidth / 2)
  .attr("y", boxy + boxheight / 4)
  .attr("text-anchor", "middle")
  .attr("dominant-baseline", "middle")
  .attr("font-size", "20px")
  .attr("font-weight", "400")      // 400 is normal, 700 is bold, 900 is extra-bold
  .attr("font-family", "sans-serif")
  .text("Average: ")
  .append(function() {
    return document.createElementNS("http://www.w3.org/2000/svg", "tspan");
  })
    .text(average.toFixed(1))
    .attr("class", "average")
    .attr("fill", "#e40074")
    .attr("font-weight", "900");


//  .text("Average : "+average.toFixed(2));

// Get the score gap:

let maxKey = null;
let minKey = null;

for (const [key, value] of Object.entries(data)) {
  if (value > 0) {
    const numKey = Number(key);
    //console.log(numkey);
    if (maxKey === null || numKey > maxKey) {
      maxKey = numKey;
    }
    if (minKey === null || numKey < minKey) {
      minKey = numKey;
    }
  }
}


scoregap = maxKey - minKey+1;

// Add text to the bottom half
svg.append("text")
  .attr("x", boxx + boxwidth / 2)
  .attr("y", boxy + 3 * boxheight / 4)
  .attr("text-anchor", "middle")
  .attr("dominant-baseline", "middle")
  .attr("font-size", "20px")
  .attr("font-weight", "400")      // 400 is normal, 700 is bold, 900 is extra-bold
  .attr("font-family", "sans-serif")
  .text("Score gap: ")
  .append(function() {
    return document.createElementNS("http://www.w3.org/2000/svg", "tspan");
  })
    .text(scoregap)
    .attr("font-weight", "900");




//  .text("Score Gap : "+scoregap);


return average;   //Needed for the next layer up in the analysis

}



function doBarData(id,qid) {
  return fetch('get_qid_counts.php', {
    method: 'POST',
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    body: new URLSearchParams({ qid })
  })
  .then(response => {
    if (!response.ok) {
      throw new Error('Network response was not OK');
    }
    return response.json();
  })
  .then(data => {
    if (data.error) {
      throw new Error(data.error);
    }
//    console.log(data);
//    console.log(data[0][Object.keys(data[0])[0]]);
/* */
	bardata = {
	  "-3": data[0][Object.keys(data[0])[0]],
	  "-2": data[1][Object.keys(data[1])[0]],
	  "-1": data[2][Object.keys(data[2])[0]],
	   "0": data[3][Object.keys(data[3])[0]],
	   "1": data[4][Object.keys(data[4])[0]],
	   "2": data[5][Object.keys(data[5])[0]],
	   "3": data[6][Object.keys(data[6])[0]],
	};

    //console.log(bardata);
    drawBar(id,bardata);
    // return data; // Should be an array like [{ value: -3, count: 2 }, ..., { value: 3, count: 5 }]
  });
}