// some warnings never hurts
#include <amxmodx>

// uncomment to remove warnings
// #pragma tabsize 0

#define MACRO_WRITE(%1,%2) for(new i = %1; i < %2; i++){\
    write_file(filename, file_content[i]);\
}

#define MACRO_TYPE(%1) write_file(filename,%1);

#define MACRO_STRING(%1,%2,%3) for(new i = 0; i < sizeof(%1); i++){\
    formatex(%3, charsmax(%3), "^"%s^", ", %1[i][%2]);\
    write_file(filename, %3);\
} write_file(filename, "],");

#define MACRO_NUMBERS(%1,%2,%3) for(new i = 0; i < sizeof(%1); i++){\
    formatex(%3, charsmax(%3), "%d, ", %1[i][%2]);\
    write_file(filename, %3);\
} write_file(filename, "],");

new const filename[] = "script.js";
new const title[] = "My Pie Chart";

enum _:struct{
    struct_name[32],
    struct_change,
    struct_color[16]
}

new data[][struct] = {
    { "Item 1", 20, "red" },
    { "Item 2", 50, "white" },
    { "Item 3", 30, "black" },
    { "Item 4", 80, "purple" },
    { "Item 5", 60, "brown" },
    { "Item 6", 70, "cyan" }
}

new file_content[][] = {
    "var canvas = document.getElementById(^"barChart^");",
    "var ctx = canvas.getContext('2d');",
    "",
    "Chart.defaults.global.defaultFontColor = 'black';",
    "Chart.defaults.global.defaultFontSize = 16;",
    "",
    "var data = {",
    "labels: [",
    // 0 - 8
    "datasets: [",
    "{",
    "fill: true,",
    "backgroundColor: [",
    // 8 - 12
    "borderColor:   ['black', 'black'],",
    "borderWidth: [2,2]",
    "}",
    "]",
    "};",
    "",
    "var options = {",
    "title: {",
    "display: true,",
    // 12 - 21
    "position: 'top'",
    "},",
    "rotation: -0.7 * Math.PI",
    "};",
    "",
    "var myBarChart = new Chart(ctx, {",
    "type: 'pie',",
    "data: data,",
    "options: options",
    "});"
    // 21 - 31
}

public plugin_init(){
    new labels[38];
    
    if (file_exists(filename))
        delete_file(filename);
    
    MACRO_WRITE(0, 8)
    MACRO_STRING(data, struct_name, labels)
    MACRO_WRITE(8, 12)
    MACRO_STRING(data, struct_color, labels)
    MACRO_TYPE("data: [")
    MACRO_NUMBERS(data, struct_change, labels)
    MACRO_WRITE(12, 21)
    formatex(labels, charsmax(labels), "text: ^"%s^",", title);
    MACRO_TYPE(labels)
    MACRO_WRITE(21, 31)
}