Guild Wars 2 API server Victory Points and Kill/Death lookup utilising JavaScript

gw2api.js

/*
 * Guild Wars 2 War Score Lookup Script  
 *
 * Coded by dubbeh
 *
 * Licensed under the GPLv3
 *
 */

var RED_WORLD_INDEX = 1;
var BLUE_WORLD_INDEX = 2;
var GREEN_WORLD_INDEX = 3;

var gw2_worlds;
var gw2_world_name;
var gw2_world_obj;
var gw2_matchup_id;
var gw2_matchup_info;

function gw2api_get_matchup_scores(world_name) {
    gw2_world_name = world_name;
    axios.get("https://api.guildwars2.com/v2/worlds?ids=all")
    .then(gw2api_got_worlds)
    .catch(function (error) {
    	console.log("GW2API: " + error);
    });
}

function gw2api_got_worlds(response) {
	if (response.status == 200 && response.statusText == 'OK') {
		gw2_worlds = response.data;
		gw2_world_obj = gw2api_get_world_object_from_name(gw2_world_name);

		if (gw2_world_obj) {
			axios.get("https://api.guildwars2.com/v2/wvw/matches/overview?world=" + gw2_world_obj.id)
			.then(gw2api_got_machup_overview)
			.catch(function (error) {
				console.log("GW2API: " + error);
			});
		} else {
			console.log("GW2API : Unable to find world with name '" + gw2_world_name + "'.");
		}
	}
}

function gw2api_got_machup_overview(response) {
	if (response.status == 200 && response.statusText == 'OK') {
		gw2_matchup_overview = response.data;
		axios.get("https://api.guildwars2.com/v2/wvw/matches/" + gw2_matchup_overview.id)
		.then(gw2api_got_matchup_info)
		.catch(function (error) {
			console.log("GW2API: " + error);
		});
	}
}

function gw2api_got_matchup_info(response) {
	if (response.status == 200 && response.statusText == 'OK') {
		gw2_matchup_info = response.data;
		gw2api_write_matchup_stats();
	}
}

function gw2api_write_matchup_stats() {

    document.getElementById("gw2results").innerHTML =
        "<font color=\"red\">" +
        gw2api_get_matchup_world_name_list(RED_WORLD_INDEX) +
        " (VP:" + gw2api_get_world_victory_points(RED_WORLD_INDEX) +
        " K/D:" + gw2api_get_world_kd(RED_WORLD_INDEX) + ") " +
        "</font>" +
        " - " +
        "<font color=\"blue\">" +
        gw2api_get_matchup_world_name_list(BLUE_WORLD_INDEX) +
        " (VP:" + gw2api_get_world_victory_points(BLUE_WORLD_INDEX) +
        " K/D:" + gw2api_get_world_kd(BLUE_WORLD_INDEX) + ") " +
        "</font>" +
        " - " +
        "<font color=\"green\">" +
        gw2api_get_matchup_world_name_list(GREEN_WORLD_INDEX) +
        " (VP:" + gw2api_get_world_victory_points(GREEN_WORLD_INDEX) +
        " K/D:" + gw2api_get_world_kd(GREEN_WORLD_INDEX) + ")" +
        "</font>";
}

function gw2api_get_world_object_from_id(world_id) {
    for (var i in gw2_worlds) {
        if (gw2_worlds[i].id == world_id) {
            return gw2_worlds[i];
        }
    }

    return 0;
}

function gw2api_get_world_object_from_name(world_name) {
    for (var i in gw2_worlds) {
        if (gw2_worlds[i].name == world_name) {
            return gw2_worlds[i];
        }
    }

    return 0;
}

function gw2api_get_matchup_world_name_list(world_colour_index) {
    var primary_world;
    var size;
    var world_list = "";

    if (world_colour_index == RED_WORLD_INDEX) {
        primary_world = gw2api_get_world_object_from_id(gw2_matchup_overview.worlds.red);
        size = gw2_matchup_info.all_worlds.red.length;
    } else if (world_colour_index == BLUE_WORLD_INDEX) {
        primary_world = gw2api_get_world_object_from_id(gw2_matchup_overview.worlds.blue);
        size = gw2_matchup_info.all_worlds.blue.length;
    } else if (world_colour_index == GREEN_WORLD_INDEX) {
        primary_world = gw2api_get_world_object_from_id(gw2_matchup_overview.worlds.green);
        size = gw2_matchup_info.all_worlds.green.length;
    } else {
        console.log("GW2 API: Unknown world_colour_index");
        return world_list;
    }

    if (size > 1) {
        world_list += primary_world.name + " + ";
        for (var i = 0; i < size; i++) {
            if ((gw2_matchup_info.all_worlds.red[i] == primary_world.id) ||
                (gw2_matchup_info.all_worlds.blue[i] == primary_world.id) ||
                (gw2_matchup_info.all_worlds.green[i] == primary_world.id)) {
                continue;
            } else if (i == size - 2) {
                if (world_colour_index == RED_WORLD_INDEX) {
                    world_list += gw2api_get_world_object_from_id(gw2_matchup_info.all_worlds.red[i]).name;
                } else if (world_colour_index == BLUE_WORLD_INDEX) {
                    world_list += gw2api_get_world_object_from_id(gw2_matchup_info.all_worlds.blue[i]).name;
                } else if (world_colour_index == GREEN_WORLD_INDEX) {
                    world_list += gw2api_get_world_object_from_id(gw2_matchup_info.all_worlds.green[i]).name;
                }
            } else {
                if (world_colour_index == RED_WORLD_INDEX) {
                    world_list += gw2api_get_world_object_from_id(gw2_matchup_info.all_worlds.red[i]).name + " + ";
                } else if (world_colour_index == BLUE_WORLD_INDEX) {
                    world_list += gw2api_get_world_object_from_id(gw2_matchup_info.all_worlds.blue[i]).name + " + ";
                } else if (world_colour_index == GREEN_WORLD_INDEX) {
                    world_list += gw2api_get_world_object_from_id(gw2_matchup_info.all_worlds.green[i]).name + " + ";
                }
            }
        }

        return world_list;
    }

    return primary_world.name;
}

function gw2api_get_world_total_kills(world_colour_index) {
    if (world_colour_index == RED_WORLD_INDEX) {
        return gw2_matchup_info.kills.red;
    } else if (world_colour_index == BLUE_WORLD_INDEX) {
        return gw2_matchup_info.kills.blue;
    } else if (world_colour_index == GREEN_WORLD_INDEX) {
        return gw2_matchup_info.kills.green;
    }

    return 0;
}

function gw2api_get_world_total_deaths(world_colour_index) {
    if (world_colour_index == RED_WORLD_INDEX) {
        return gw2_matchup_info.deaths.red;
    } else if (world_colour_index == BLUE_WORLD_INDEX) {
        return gw2_matchup_info.deaths.blue;
    } else if (world_colour_index == GREEN_WORLD_INDEX) {
        return gw2_matchup_info.deaths.green;
    }

    return 0;
}

function gw2api_get_world_victory_points(world_colour_index) {
    if (world_colour_index == RED_WORLD_INDEX) {
        return gw2_matchup_info.victory_points.red;
    } else if (world_colour_index == BLUE_WORLD_INDEX) {
        return gw2_matchup_info.victory_points.blue;
    } else if (world_colour_index == GREEN_WORLD_INDEX) {
        return gw2_matchup_info.victory_points.green;
    }
}

function gw2api_get_world_kd(world_colour_index) {
    if (world_colour_index == RED_WORLD_INDEX) {
        return (gw2api_get_world_total_kills(RED_WORLD_INDEX) / gw2api_get_world_total_deaths(RED_WORLD_INDEX)).toFixed(2);
    } else if (world_colour_index == BLUE_WORLD_INDEX) {
        return (gw2api_get_world_total_kills(BLUE_WORLD_INDEX) / gw2api_get_world_total_deaths(BLUE_WORLD_INDEX)).toFixed(2);
    } else if (world_colour_index == GREEN_WORLD_INDEX) {
        return (gw2api_get_world_total_kills(GREEN_WORLD_INDEX) / gw2api_get_world_total_deaths(GREEN_WORLD_INDEX)).toFixed(2);
    }
}

index.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script src="js/gw2api.js"></script>
<title>GW2 API World Scores</title>
</head>
<body>
<script>
gw2api_get_matchup_scores ("Vabbi");
</script>
<p id="gw2results">Syncing...</p>
</body>
</html>