Locate all BoosterCard instances while drafting and display delta winrate from 17lands data
// ==UserScript==
// @name Draftmancer Card Rating Inspector
// @namespace http://tampermonkey.net/
// @version 1.5
// @description Locate all BoosterCard instances while drafting and display delta winrate from 17lands data
// @homepage https://greasyfork.org/scripts/545265
// @supportURL https://greasyfork.org/scripts/545265/feedback
// @author xiaoas
// @match https://draftmancer.com/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
let cardRatingsList = []; // Aggregated list of ratings across expansions
let cardRatingsByName = {}; // Map: name -> rating entry
let cardRatingsByMtgaId = {}; // Map: mtga_id -> rating entry
let currentExpansion = 'EOE'; // Default to EOE
let lastCardNames = []; // Track last known card names
let refreshInterval = null;
let isRequestInProgress = false; // Prevent overlapping requests
let isLoopInProgress = false; // Prevent overlapping main loop runs
const queriedExpansions = new Set(); // Track expansions whose data has been fetched
const fetchPromisesByExpansion = {}; // Track in-flight fetches per expansion
let activeFetchCount = 0; // Track number of active fetches
// Expansion mapping from page names to 17lands parameters
const expansionMapping = {
"Lorwyn Eclipsed": "ECL",
"Avatar: The Last Airbender": "TLA",
"Through the Omenpaths": "OM1",
"Edge of Eternities": "EOE",
"Final Fantasy": "FIN",
"Tarkir: Dragonstorm": "TDM",
"Aetherdrift": "DFT",
"Foundations": "FDN",
"Duskmourn: House of Horror": "DSK",
"Bloomburrow": "BLB",
"Modern Horizons 3": "MH3",
"Outlaws of Thunder Junction": "OTJ",
"Murders at Karlov Manor": "MKM",
"The Lost Caverns of Ixalan": "LCI",
"Wilds of Eldraine": "WOE",
"March of the Machine": "MOM",
};
let warnedUnknownExpansions = [];
// Function to detect current expansion from page
function detectExpansion() {
try {
const setElement = document.querySelector('.selected-set-name');
if (setElement) {
const setText = setElement.innerText.trim();
currentExpansion = expansionMapping[setText];
if (!currentExpansion && setText && !warnedUnknownExpansions.includes(setText)) {
console.warn(`⚠️ Unknown expansion detected: "${setText}". Please update the expansionMapping.`);
warnedUnknownExpansions.push(setText);
}
return currentExpansion;
}
} catch (error) {
console.error('❌ Error detecting expansion:', error);
}
return currentExpansion;
}
let warnedUnknownSetNames = [];
function inferExpansionsFromSetName(setString) {
const s = (setString || '').toLowerCase();
const inferred = new Set();
if (s == 'ecl') inferred.add('ECL');
if (['tla', 'tle'].includes(s)) inferred.add('TLA');
if (['om1', 'spm'].includes(s)) inferred.add('OM1');
if (['eoe', 'eos'].includes(s)) inferred.add('EOE');
if (s == 'fin') inferred.add('FIN');
if (s == 'tdm') inferred.add('TDM');
if (['dft', 'spg'].includes(s)) inferred.add('DFT');
if (s == 'fdn') inferred.add('FDN');
if (s == 'dsk') inferred.add('DSK');
if (s == 'blb') inferred.add('BLB');
if (s == 'mh3') inferred.add('MH3');
if (['otj', 'otp'].includes(s)) inferred.add('OTJ');
if (s == 'mkm') inferred.add('MKM');
if (s == 'lci') inferred.add('LCI');
if (['woe', 'wot'].includes(s)) inferred.add('WOE');
if (['mom', 'mul'].includes(s)) inferred.add('MOM');
if (inferred.size === 0 && setString && !warnedUnknownSetNames.includes(setString)) {
console.warn(`⚠️ Failed to infer expansion for card with set name: "${setString}".`);
warnedUnknownSetNames.push(setString);
}
return Array.from(inferred);
}
// Function to calculate weighted average win rate for an expansion
function calculateWeightedAverageWinRate(expansionData) {
if (!expansionData || expansionData.length === 0) return 0;
let totalWeightedWinRate = 0;
let totalGames = 0;
expansionData.forEach(card => {
if (card.ever_drawn_win_rate !== undefined && card.ever_drawn_game_count) {
totalWeightedWinRate += card.ever_drawn_win_rate * card.ever_drawn_game_count;
totalGames += card.ever_drawn_game_count;
}
});
return totalGames > 0 ? totalWeightedWinRate / totalGames : 0;
}
// Function to fetch card ratings data from 17lands for a specific expansion and merge
async function fetchCardRatings(targetExpansion) {
if (!targetExpansion) return null;
if (queriedExpansions.has(targetExpansion)) {
return null;
}
if (fetchPromisesByExpansion[targetExpansion]) {
return await fetchPromisesByExpansion[targetExpansion];
}
// Track global request state
activeFetchCount += 1;
isRequestInProgress = activeFetchCount > 0;
try {
// console.log(`📊 Fetching card ratings from 17lands for expansion: ${targetExpansion}`);
let format = 'PremierDraft', suffix = '';
switch (targetExpansion) {
case 'OM1':
format = 'PickTwoDraft';
suffix = '&start_date=2025-09-23&end_date=2025-11-15';
break;
case 'TDM':
suffix = '&start_date=2025-04-08&end_date=2025-10-13';
break;
case 'DFT':
suffix = '&start_date=2025-02-11&end_date=2025-08-19';
break;
case 'FDN':
suffix = '&start_date=2024-11-12&end_date=2025-08-23';
break;
case 'DSK':
suffix = '&start_date=2024-09-24&end_date=2025-09-05';
break;
case 'BLB':
suffix = '&start_date=2024-07-30&end_date=2025-09-05';
break;
case 'MH3':
suffix = '&start_date=2024-06-11&end_date=2025-09-05';
break;
case 'OTJ':
suffix = '&start_date=2024-04-16&end_date=2025-09-05';
break;
case 'MKM':
suffix = '&start_date=2024-02-06&end_date=2025-09-05';
break;
case 'LCI':
suffix = '&start_date=2023-11-14&end_date=2025-09-05';
break;
case 'WOE':
suffix = '&start_date=2023-09-05&end_date=2025-09-05';
break;
case 'MOM':
suffix = '&start_date=2023-04-18&end_date=2025-09-05';
break;
default:
break;
}
const url = `https://www.17lands.com/card_ratings/data?expansion=${targetExpansion}&event_type=${format}${suffix}`;
const fetchPromise = fetch(url).then(async (response) => {
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const expansionData = await response.json();
// Merge entries into list and maps (by mtga_id if available, otherwise by name)
expansionData.forEach(entry => {
if (!entry || !entry.name) return;
const id = entry.mtga_id;
let existing = null;
if (id != null && cardRatingsByMtgaId[id]) {
existing = cardRatingsByMtgaId[id];
} else if (cardRatingsByName[entry.name]) {
existing = cardRatingsByName[entry.name];
}
if (existing) {
// Update existing entry in-place
Object.assign(existing, entry);
// Ensure maps are synced
cardRatingsByName[existing.name] = existing;
if (existing.mtga_id != null) {
cardRatingsByMtgaId[existing.mtga_id] = existing;
}
} else {
cardRatingsList.push(entry);
cardRatingsByName[entry.name] = entry;
if (id != null) {
cardRatingsByMtgaId[id] = entry;
}
}
});
queriedExpansions.add(targetExpansion);
return expansionData;
});
fetchPromisesByExpansion[targetExpansion] = fetchPromise;
const result = await fetchPromise;
return result;
} catch (error) {
console.error('❌ Error fetching card ratings:', error);
return null;
} finally {
// Clear in-flight promise and update request tracking
delete fetchPromisesByExpansion[targetExpansion];
activeFetchCount = Math.max(0, activeFetchCount - 1);
isRequestInProgress = activeFetchCount > 0;
}
}
// Function to find card rating by mtga_id (arena_id) first, then by name
function findCardRating(card) {
if (!card) return null;
if (card.arena_id != null && cardRatingsByMtgaId[card.arena_id]) {
return cardRatingsByMtgaId[card.arena_id];
}
if (cardRatingsByName[card.name]) {
return cardRatingsByName[card.name];
}
if (card.name.includes(' // ')) {
const short_name = card.name.split(' // ')[0];
if (cardRatingsByName[short_name]) {
return cardRatingsByName[short_name];
}
}
return null;
}
// Function to get color based on delta winrate
function getColorForDelta(deltaWinrate) {
// Normalize delta to 0-1 range for color calculation
const normalizedDelta = Math.max(-0.05, Math.min(0.05, deltaWinrate));
const normalizedValue = (normalizedDelta + 0.05) / 0.1; // Convert to 0-1 range
let r, g, b;
if (normalizedValue >= 0.5) {
// yellow to green transition (0.5 to 1.0)
const factor = (normalizedValue - 0.5) * 2; // 0 to 1
r = Math.round(192 * (1-factor));
g = Math.round(128 * (1+factor) - 1);
b = Math.round(32 * (1+factor) - 1);
} else {
// red to yellow transition (0.0 to 0.5)
const factor = normalizedValue * 2; // 0 to 1
r = Math.round(64 * (3+factor) - 1);
g = Math.round(127 * factor);
b = 0;
}
return `rgba(${r}, ${g}, ${b}, 0.8)`;
}
let warnedUnknownCardNames = [];
// Function to add delta winrate overlays above each card
function addDeltaWinrateOverlays(boosterCards) {
// Extract current card names for comparison
const currentCardNames = boosterCards.map(card => card.props.card.name);
// Check if card list has changed
if (currentCardNames.length === 0) {
console.log('⚠️ No cards found, skipping overlay refresh');
return;
}
// Check if the card list is the same as last time and overlays already present
const existingOverlaysForSkipCheck = document.querySelectorAll('.card-name-overlay');
const isSameCardList = lastCardNames.length === currentCardNames.length &&
lastCardNames.every((name, index) => name === currentCardNames[index]);
if (isSameCardList && existingOverlaysForSkipCheck.length === currentCardNames.length) {
// console.log('🔄 Card list unchanged and overlays present, skipping overlay refresh');
return;
}
// console.log('🎨 Adding delta winrate overlays...');
// console.log(`📊 Cards changed from [${lastCardNames.join(', ')}] to [${currentCardNames.join(', ')}]`);
// Update last known card names
lastCardNames = [...currentCardNames];
// Remove any existing overlays first
const existingOverlays = document.querySelectorAll('.card-name-overlay');
existingOverlays.forEach(overlay => overlay.remove());
// Try to match Vue components with DOM elements
boosterCards.forEach((card, index) => {
const cardData = card.props.card;
let element = card.el;
if (!element) {
console.log(`❌ No DOM element found for card: ${cardData.name}`);
return;
}
// Find the card rating
const rating = findCardRating(cardData);
let displayText = cardData.name;
let backgroundColor = 'rgba(0, 0, 0, 0.8)';
if (!rating) {
if (!warnedUnknownCardNames.includes(cardData.name)) {
console.log(`⚠️ No rating data found for: ${cardData.name}`);
warnedUnknownCardNames.push(cardData.name);
}
return;
}
const cardWinRate = rating.ever_drawn_win_rate;
const averageWinRate = 0.55; // hard code to allow multi pack scenario
const deltaWinrate = cardWinRate - averageWinRate;
const percentage = (deltaWinrate * 100).toFixed(1);
displayText = deltaWinrate >= 0 ? `+${percentage}` : `${percentage}`;
// Use gradual color transition based on delta winrate
backgroundColor = getColorForDelta(deltaWinrate);
// Create overlay element
const overlay = document.createElement('div');
overlay.className = 'card-name-overlay';
overlay.textContent = displayText;
overlay.title = `${cardData.name}: ${displayText}`;
overlay.style.cssText = `
position: absolute;
top: 20%;
right: 5px;
background: ${backgroundColor};
color: white;
padding: 4px 8px;
border-radius: 4px;
font-size: 12px;
font-weight: bold;
white-space: nowrap;
z-index: 1000;
pointer-events: none;
text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
cursor: help;
`;
// Append the overlay directly to the card element itself
element.appendChild(overlay);
// console.log(`✅ Added overlay for "${cardData.name}" (${displayText}) to element:`, element);
});
}
// Function to start monitoring for changes
function startMonitoring() {
if (refreshInterval) {
clearInterval(refreshInterval);
}
// Monitor for changes in the main content area
const targetNode = document.querySelector('.main-content') || document.body;
refreshInterval = setInterval(() => {
// Only run if no loop is currently in progress
if (!isLoopInProgress) {
refreshOverlaysLoop();
} else {
// console.log('⏳ Skipping interval - loop in progress');
}
}, 1000); // Check every 1000ms
// console.log('👀 Started monitoring for card changes');
}
// Synchronous function to find and return BoosterCard instances using Vue 3 app structure
function findBoosterCards() {
try {
// console.log('🔍 Locating BoosterCard instances using Vue 3 app structure...');
if (!document.querySelector('.booster.card-container')) { // game has not started yet
return [];
}
// Find the Vue 3 app instance
const appElement = Array.from(document.querySelectorAll('*')).find((e) => e.__vue_app__);
if (!appElement) {
// console.log('❌ No Vue 3 app found');
return [];
}
const app = appElement.__vue_app__;
// console.log('✅ Vue 3 app found:', app);
// Check if BoosterCard component exists
if (!app._component.components.BoosterCard) {
// console.log('❌ BoosterCard component not found in app._component.components');
// console.log('Available components:', Object.keys(app._component.components));
return [];
}
// Navigate through the component tree as described
let currentNode = app._container._vnode.component.subTree;
if (!currentNode) {
// console.log('❌ Could not access app._container._vnode.component.subTree');
return [];
}
// Find main-content
const mainContentNode = currentNode.children?.find(child =>
child.props?.class === 'main-content'
);
if (!mainContentNode) {
// console.log('❌ Could not find main-content node');
// console.log('Available children:', currentNode.children);
return [];
}
// Find generic-container
const genericContainerNode = mainContentNode.children?.find(child =>
child.props?.class === 'generic-container'
);
if (!genericContainerNode) {
// console.log('❌ Could not find generic-container node');
// console.log('Available children:', mainContentNode.children);
return [];
}
// Find node with type == 'Symbol(v-fgt)'
const vFgtNode = genericContainerNode.children?.find(child =>
child.type && child.type.toString() === 'Symbol(v-fgt)'
);
if (!vFgtNode) {
// console.log('❌ Could not find v-fgt node');
// console.log('Available children:', genericContainerNode.children);
return [];
}
// Find transition node and navigate to draft-picking container
const draftPickingNode = vFgtNode.children?.find(child => {
return child.el && child.el.nodeName === 'DIV'
});
if (!draftPickingNode) {
// console.log('❌ Could not find draft-picking container node');
// console.log('Available v-fgt children:', vFgtNode.children);
return [];
}
// Get the actual draft-picking node from the component tree
const actualDraftPickingNode = draftPickingNode.component.subTree.component.subTree;
// Find booster-cards TransitionGroup
const boosterCardsNode = actualDraftPickingNode.children?.find(child =>
child.type?.name === 'TransitionGroup'
);
if (!boosterCardsNode) {
// console.log('❌ Could not find booster-cards TransitionGroup');
// console.log('Available draft-picking children:', actualDraftPickingNode.children);
return [];
}
// Get the list of BoosterCards
if (boosterCardsNode.component?.subTree?.children) {
const boosterCards = boosterCardsNode.component.subTree.children;
return boosterCards || [];
} else {
// console.log('❌ Could not access booster-cards children');
return [];
}
} catch (error) {
console.error('❌ Error while locating BoosterCards:', error);
return [];
}
}
// Main loop to: prefetch related data, then render overlays
async function refreshOverlaysLoop() {
if (isLoopInProgress) return;
isLoopInProgress = true;
try {
// Prefetch based on detected expansion if possible (best-effort)
const detected = detectExpansion();
if (detected && !queriedExpansions.has(detected)) {
await fetchCardRatings(detected);
}
const boosterCards = findBoosterCards();
if (!boosterCards || boosterCards.length === 0) {
return;
}
// Determine which expansions to fetch based on the sets of visible cards
const expansionsToFetch = new Set();
boosterCards.forEach(cardNode => {
const card = cardNode?.props?.card;
if (!card) return;
const hasRating = (card.arena_id != null && cardRatingsByMtgaId[card.arena_id]) || cardRatingsByName[card.name];
if (hasRating) return;
const inferred = inferExpansionsFromSetName(card.set);
inferred.forEach(exp => {
if (!queriedExpansions.has(exp)) {
expansionsToFetch.add(exp);
}
});
});
if (expansionsToFetch.size > 0) {
await Promise.all(Array.from(expansionsToFetch).map(exp => fetchCardRatings(exp)));
}
// Now render overlays
addDeltaWinrateOverlays(boosterCards);
} catch (error) {
console.error('❌ Error in refreshOverlaysLoop:', error);
} finally {
isLoopInProgress = false;
}
}
// Register functions to window for easy access
window.findDraftmancerBoosterCards = findBoosterCards;
window.addDeltaWinrateOverlays = addDeltaWinrateOverlays;
window.fetchCardRatings = fetchCardRatings;
window.startMonitoring = startMonitoring;
window.refreshOverlaysLoop = refreshOverlaysLoop;
window.stopMonitoring = () => {
if (refreshInterval) {
clearInterval(refreshInterval);
refreshInterval = null;
console.log('⏹️ Stopped monitoring for card changes');
}
};
// Auto-run the search after a delay to allow Vue to initialize
setTimeout(() => {
console.log('🚀 Draftmancer Card Rating Inspector script loaded!');
console.log('💡 Use window.findDraftmancerBoosterCards() to get BoosterCards');
console.log('💡 Use window.addDeltaWinrateOverlays(boosterCards) to add visual overlays');
console.log('💡 Use window.fetchCardRatings(expansion) to fetch 17lands data for a specific expansion');
console.log('💡 Use window.startMonitoring() to start monitoring for changes');
console.log('💡 Auto-running monitor in 1 second...');
setTimeout(() => {
refreshOverlaysLoop();
startMonitoring();
}, 1000);
}, 100);
})();