(function(){'use strict';function token(){return(window.__auth&&window.__auth.getAccessToken&&window.__auth.getAccessToken())||null;}
function hubSlugFromPath(){var m=location.pathname.match(/^\/([^\/]+?)(?:\.html?)?\/?$/);return m&&m[1]?decodeURIComponent(m[1]):'';}
function dispatchProgress(result){if(result&&typeof result.total_xp==='number'){document.dispatchEvent(new CustomEvent('exercise-progress-changed',{detail:{total_xp:result.total_xp,current_streak_days:result.current_streak_days,longest_streak_days:result.longest_streak_days}}));}}
function reportSolve(hub,exerciseId,hintsUsed){var t=token();if(!t||!hub||!exerciseId)return Promise.resolve(null);try{return fetch('/api/exercise/'+encodeURIComponent(hub)+'/'+encodeURIComponent(exerciseId)+'/attempt',{method:'POST',headers:{'Content-Type':'application/json','Authorization':'Bearer '+t},body:JSON.stringify({passed:true,hints_used:hintsUsed||0}),keepalive:true}).then(function(r){return r.ok?r.json():null;}).then(function(res){dispatchProgress(res);return res;}).catch(function(){return null;});}catch(e){return Promise.resolve(null);}}
function fetchSolved(hub){var t=token();if(!t||!hub)return Promise.resolve([]);return fetch('/api/me/exercises?hub='+encodeURIComponent(hub),{headers:{'Authorization':'Bearer '+t,'Accept':'application/json'}}).then(function(r){return r.ok?r.json():null;}).then(function(b){return(b&&Array.isArray(b.solved))?b.solved:[];}).catch(function(){return[];});}
window.RSCExerciseAPI={token:token,hubSlugFromPath:hubSlugFromPath,reportSolve:reportSolve,fetchSolved:fetchSolved};})();