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feat(plugins): add quota-limited session storage API

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geracobo
2026-07-25 18:31:44 -06:00
committed by Maurice
parent cc8e4d480e
commit 2068133de2
10 changed files with 243 additions and 23 deletions
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plugin-sdk/src/cli/dev.ts
+15 -1
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@@ -665,7 +665,10 @@ function ctx(){
function postCtx(){ if(f.contentWindow) f.contentWindow.postMessage(ctx(),"*"); }
var tt; function toast(msg){var el=document.getElementById("toast");el.textContent=msg;el.classList.add("on");clearTimeout(tt);tt=setTimeout(function(){el.classList.remove("on");},2200);}
var SESSION_PREFIX="trek:plugin-session:1:"+encodeURIComponent(${JSON.stringify(id)})+":";
var SESSION_MAX_KEYS=32,SESSION_MAX_KEY_LENGTH=64,SESSION_MAX_VALUE_BYTES=1024;
function sessionFail(m,code,message){f.contentWindow.postMessage({type:"trek:error",requestId:m.requestId,code:code,message:message},"*");}
function sessionMessage(m){
try {
var trip=ctx().tripId, scope=m.scope==="trip"?"trip":"plugin";
if(scope==="trip"&&!trip){f.contentWindow.postMessage({type:"trek:error",requestId:m.requestId,code:"NO_TRIP_CONTEXT",message:"trip session storage requires a trip context"},"*");return;}
var prefix=SESSION_PREFIX+scope+(scope==="trip"?":"+encodeURIComponent(String(trip)):"")+":";
@@ -673,12 +676,23 @@ function sessionMessage(m){
if(m.type==="trek:session:clear"){
var doomed=[];for(var i=0;i<sessionStorage.length;i++){var stored=sessionStorage.key(i);if(stored&&stored.indexOf(prefix)===0)doomed.push(stored);}doomed.forEach(function(stored){sessionStorage.removeItem(stored);});
} else {
if(typeof m.key!=="string"||!m.key||m.key.length>SESSION_MAX_KEY_LENGTH){sessionFail(m,"SESSION_INVALID_KEY","session key must be 1-"+SESSION_MAX_KEY_LENGTH+" characters");return;}
var key=prefix+encodeURIComponent(m.key);
if(m.type==="trek:session:get"){var raw=sessionStorage.getItem(key);data=raw===null?undefined:JSON.parse(raw);}
else if(m.type==="trek:session:remove"){sessionStorage.removeItem(key);}
else {sessionStorage.setItem(key,JSON.stringify(m.value));}
else {
var json=JSON.stringify(m.value);
if(json===undefined){sessionFail(m,"SESSION_INVALID_VALUE","session value must be JSON-serialisable");return;}
var bytes=new TextEncoder().encode(json).length;
if(bytes>SESSION_MAX_VALUE_BYTES){sessionFail(m,"SESSION_VALUE_TOO_LARGE","session value exceeds "+SESSION_MAX_VALUE_BYTES+" bytes");return;}
var count=0,exists=false;
for(var j=0;j<sessionStorage.length;j++){var sk=sessionStorage.key(j);if(sk&&sk.indexOf(prefix)===0){count++;if(sk===key)exists=true;}}
if(!exists&&count>=SESSION_MAX_KEYS){sessionFail(m,"SESSION_KEY_LIMIT","plugin session storage allows at most "+SESSION_MAX_KEYS+" keys");return;}
sessionStorage.setItem(key,json);
}
}
f.contentWindow.postMessage({type:"trek:response",requestId:m.requestId,data:data},"*");
} catch(e) { sessionFail(m,"SESSION_STORAGE_ERROR",String(e&&e.message||e)); }
}
window.addEventListener("message", function(ev){
if(ev.source!==f.contentWindow) return;