goog.provide('re_frame.interceptor');
re_frame.interceptor.mandatory_interceptor_keys = new cljs.core.PersistentHashSet(null, new cljs.core.PersistentArrayMap(null, 3, [new cljs.core.Keyword(null,"after","after",594996914),null,new cljs.core.Keyword(null,"id","id",-1388402092),null,new cljs.core.Keyword(null,"before","before",-1633692388),null], null), null);
re_frame.interceptor.interceptor_QMARK_ = (function re_frame$interceptor$interceptor_QMARK_(m){
return ((cljs.core.map_QMARK_(m)) && (cljs.core._EQ_.cljs$core$IFn$_invoke$arity$2(re_frame.interceptor.mandatory_interceptor_keys,cljs.core.set(cljs.core.keys(m)))));
});
re_frame.interceptor.__GT_interceptor = (function re_frame$interceptor$__GT_interceptor(var_args){
var args__5755__auto__ = [];
var len__5749__auto___52857 = arguments.length;
var i__5750__auto___52858 = (0);
while(true){
if((i__5750__auto___52858 < len__5749__auto___52857)){
args__5755__auto__.push((arguments[i__5750__auto___52858]));

var G__52859 = (i__5750__auto___52858 + (1));
i__5750__auto___52858 = G__52859;
continue;
} else {
}
break;
}

var argseq__5756__auto__ = ((((0) < args__5755__auto__.length))?(new cljs.core.IndexedSeq(args__5755__auto__.slice((0)),(0),null)):null);
return re_frame.interceptor.__GT_interceptor.cljs$core$IFn$_invoke$arity$variadic(argseq__5756__auto__);
});

(re_frame.interceptor.__GT_interceptor.cljs$core$IFn$_invoke$arity$variadic = (function (p__52812){
var map__52813 = p__52812;
var map__52813__$1 = cljs.core.__destructure_map(map__52813);
var m = map__52813__$1;
var id = cljs.core.get.cljs$core$IFn$_invoke$arity$2(map__52813__$1,new cljs.core.Keyword(null,"id","id",-1388402092));
var before = cljs.core.get.cljs$core$IFn$_invoke$arity$2(map__52813__$1,new cljs.core.Keyword(null,"before","before",-1633692388));
var after = cljs.core.get.cljs$core$IFn$_invoke$arity$2(map__52813__$1,new cljs.core.Keyword(null,"after","after",594996914));
if(re_frame.interop.debug_enabled_QMARK_){
var temp__5821__auto___52860 = cljs.core.seq(clojure.set.difference.cljs$core$IFn$_invoke$arity$2(cljs.core.set(cljs.core.keys(m)),re_frame.interceptor.mandatory_interceptor_keys));
if(temp__5821__auto___52860){
var unknown_keys_52861 = temp__5821__auto___52860;
re_frame.loggers.console.cljs$core$IFn$_invoke$arity$variadic(new cljs.core.Keyword(null,"error","error",-978969032),cljs.core.prim_seq.cljs$core$IFn$_invoke$arity$2(["re-frame: ->interceptor",m,"has unknown keys:",unknown_keys_52861], 0));
} else {
}
} else {
}

return new cljs.core.PersistentArrayMap(null, 3, [new cljs.core.Keyword(null,"id","id",-1388402092),(function (){var or__5025__auto__ = id;
if(cljs.core.truth_(or__5025__auto__)){
return or__5025__auto__;
} else {
return new cljs.core.Keyword(null,"unnamed","unnamed",-26044928);
}
})(),new cljs.core.Keyword(null,"before","before",-1633692388),before,new cljs.core.Keyword(null,"after","after",594996914),after], null);
}));

(re_frame.interceptor.__GT_interceptor.cljs$lang$maxFixedArity = (0));

/** @this {Function} */
(re_frame.interceptor.__GT_interceptor.cljs$lang$applyTo = (function (seq52804){
var self__5735__auto__ = this;
return self__5735__auto__.cljs$core$IFn$_invoke$arity$variadic(cljs.core.seq(seq52804));
}));

re_frame.interceptor.get_effect = (function re_frame$interceptor$get_effect(var_args){
var G__52819 = arguments.length;
switch (G__52819) {
case 1:
return re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$1((arguments[(0)]));

break;
case 2:
return re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$2((arguments[(0)]),(arguments[(1)]));

break;
case 3:
return re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$3((arguments[(0)]),(arguments[(1)]),(arguments[(2)]));

break;
default:
throw (new Error(["Invalid arity: ",cljs.core.str.cljs$core$IFn$_invoke$arity$1(arguments.length)].join('')));

}
});

(re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$1 = (function (context){
return new cljs.core.Keyword(null,"effects","effects",-282369292).cljs$core$IFn$_invoke$arity$1(context);
}));

(re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$2 = (function (context,key){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$2(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"effects","effects",-282369292),key], null));
}));

(re_frame.interceptor.get_effect.cljs$core$IFn$_invoke$arity$3 = (function (context,key,not_found){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$3(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"effects","effects",-282369292),key], null),not_found);
}));

(re_frame.interceptor.get_effect.cljs$lang$maxFixedArity = 3);

re_frame.interceptor.assoc_effect = (function re_frame$interceptor$assoc_effect(context,key,value){
return cljs.core.assoc_in(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"effects","effects",-282369292),key], null),value);
});
re_frame.interceptor.update_effect = (function re_frame$interceptor$update_effect(var_args){
var args__5755__auto__ = [];
var len__5749__auto___52866 = arguments.length;
var i__5750__auto___52867 = (0);
while(true){
if((i__5750__auto___52867 < len__5749__auto___52866)){
args__5755__auto__.push((arguments[i__5750__auto___52867]));

var G__52868 = (i__5750__auto___52867 + (1));
i__5750__auto___52867 = G__52868;
continue;
} else {
}
break;
}

var argseq__5756__auto__ = ((((3) < args__5755__auto__.length))?(new cljs.core.IndexedSeq(args__5755__auto__.slice((3)),(0),null)):null);
return re_frame.interceptor.update_effect.cljs$core$IFn$_invoke$arity$variadic((arguments[(0)]),(arguments[(1)]),(arguments[(2)]),argseq__5756__auto__);
});

(re_frame.interceptor.update_effect.cljs$core$IFn$_invoke$arity$variadic = (function (context,key,f,args){
return cljs.core.apply.cljs$core$IFn$_invoke$arity$5(cljs.core.update_in,context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"effects","effects",-282369292),key], null),f,args);
}));

(re_frame.interceptor.update_effect.cljs$lang$maxFixedArity = (3));

/** @this {Function} */
(re_frame.interceptor.update_effect.cljs$lang$applyTo = (function (seq52824){
var G__52825 = cljs.core.first(seq52824);
var seq52824__$1 = cljs.core.next(seq52824);
var G__52826 = cljs.core.first(seq52824__$1);
var seq52824__$2 = cljs.core.next(seq52824__$1);
var G__52827 = cljs.core.first(seq52824__$2);
var seq52824__$3 = cljs.core.next(seq52824__$2);
var self__5734__auto__ = this;
return self__5734__auto__.cljs$core$IFn$_invoke$arity$variadic(G__52825,G__52826,G__52827,seq52824__$3);
}));

re_frame.interceptor.get_coeffect = (function re_frame$interceptor$get_coeffect(var_args){
var G__52833 = arguments.length;
switch (G__52833) {
case 1:
return re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$1((arguments[(0)]));

break;
case 2:
return re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$2((arguments[(0)]),(arguments[(1)]));

break;
case 3:
return re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$3((arguments[(0)]),(arguments[(1)]),(arguments[(2)]));

break;
default:
throw (new Error(["Invalid arity: ",cljs.core.str.cljs$core$IFn$_invoke$arity$1(arguments.length)].join('')));

}
});

(re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$1 = (function (context){
return new cljs.core.Keyword(null,"coeffects","coeffects",497912985).cljs$core$IFn$_invoke$arity$1(context);
}));

(re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$2 = (function (context,key){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$2(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"coeffects","coeffects",497912985),key], null));
}));

(re_frame.interceptor.get_coeffect.cljs$core$IFn$_invoke$arity$3 = (function (context,key,not_found){
return cljs.core.get_in.cljs$core$IFn$_invoke$arity$3(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"coeffects","coeffects",497912985),key], null),not_found);
}));

(re_frame.interceptor.get_coeffect.cljs$lang$maxFixedArity = 3);

re_frame.interceptor.assoc_coeffect = (function re_frame$interceptor$assoc_coeffect(context,key,value){
return cljs.core.assoc_in(context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"coeffects","coeffects",497912985),key], null),value);
});
re_frame.interceptor.update_coeffect = (function re_frame$interceptor$update_coeffect(var_args){
var args__5755__auto__ = [];
var len__5749__auto___52874 = arguments.length;
var i__5750__auto___52875 = (0);
while(true){
if((i__5750__auto___52875 < len__5749__auto___52874)){
args__5755__auto__.push((arguments[i__5750__auto___52875]));

var G__52876 = (i__5750__auto___52875 + (1));
i__5750__auto___52875 = G__52876;
continue;
} else {
}
break;
}

var argseq__5756__auto__ = ((((3) < args__5755__auto__.length))?(new cljs.core.IndexedSeq(args__5755__auto__.slice((3)),(0),null)):null);
return re_frame.interceptor.update_coeffect.cljs$core$IFn$_invoke$arity$variadic((arguments[(0)]),(arguments[(1)]),(arguments[(2)]),argseq__5756__auto__);
});

(re_frame.interceptor.update_coeffect.cljs$core$IFn$_invoke$arity$variadic = (function (context,key,f,args){
return cljs.core.apply.cljs$core$IFn$_invoke$arity$5(cljs.core.update_in,context,new cljs.core.PersistentVector(null, 2, 5, cljs.core.PersistentVector.EMPTY_NODE, [new cljs.core.Keyword(null,"coeffects","coeffects",497912985),key], null),f,args);
}));

(re_frame.interceptor.update_coeffect.cljs$lang$maxFixedArity = (3));

/** @this {Function} */
(re_frame.interceptor.update_coeffect.cljs$lang$applyTo = (function (seq52838){
var G__52839 = cljs.core.first(seq52838);
var seq52838__$1 = cljs.core.next(seq52838);
var G__52840 = cljs.core.first(seq52838__$1);
var seq52838__$2 = cljs.core.next(seq52838__$1);
var G__52841 = cljs.core.first(seq52838__$2);
var seq52838__$3 = cljs.core.next(seq52838__$2);
var self__5734__auto__ = this;
return self__5734__auto__.cljs$core$IFn$_invoke$arity$variadic(G__52839,G__52840,G__52841,seq52838__$3);
}));

re_frame.interceptor.invoke_interceptor_fn = (function re_frame$interceptor$invoke_interceptor_fn(context,interceptor,direction){
var temp__5821__auto__ = cljs.core.get.cljs$core$IFn$_invoke$arity$2(interceptor,direction);
if(cljs.core.truth_(temp__5821__auto__)){
var f = temp__5821__auto__;
return (f.cljs$core$IFn$_invoke$arity$1 ? f.cljs$core$IFn$_invoke$arity$1(context) : f.call(null,context));
} else {
return context;
}
});
/**
 * Loop over all interceptors, calling `direction` function on each,
 *   threading the value of `context` through every call.
 * 
 *   `direction` is one of `:before` or `:after`.
 * 
 *   Each iteration, the next interceptor to process is obtained from
 *   context's `:queue`. After they are processed, interceptors are popped
 *   from `:queue` and added to `:stack`.
 * 
 *   After sufficient iteration, `:queue` will be empty, and `:stack` will
 *   contain all interceptors processed.
 * 
 *   Returns updated `context`. Ie. the `context` which has been threaded
 *   through all interceptor functions.
 * 
 *   Generally speaking, an interceptor's `:before` function will (if present)
 *   add to a `context's` `:coeffects`, while its `:after` function
 *   will modify the `context`'s `:effects`.  Very approximately.
 * 
 *   But because all interceptor functions are given `context`, and can
 *   return a modified version of it, the way is clear for an interceptor
 *   to introspect the stack or queue, or even modify the queue
 *   (add new interceptors via `enqueue`?). This is a very fluid arrangement.
 */
re_frame.interceptor.invoke_interceptors = (function re_frame$interceptor$invoke_interceptors(context,direction){
var context__$1 = context;
while(true){
var queue = new cljs.core.Keyword(null,"queue","queue",1455835879).cljs$core$IFn$_invoke$arity$1(context__$1);
if(cljs.core.empty_QMARK_(queue)){
return context__$1;
} else {
var interceptor = cljs.core.peek(queue);
var stack = new cljs.core.Keyword(null,"stack","stack",-793405930).cljs$core$IFn$_invoke$arity$1(context__$1);
var G__52878 = re_frame.interceptor.invoke_interceptor_fn(cljs.core.assoc.cljs$core$IFn$_invoke$arity$variadic(context__$1,new cljs.core.Keyword(null,"queue","queue",1455835879),cljs.core.pop(queue),cljs.core.prim_seq.cljs$core$IFn$_invoke$arity$2([new cljs.core.Keyword(null,"stack","stack",-793405930),cljs.core.conj.cljs$core$IFn$_invoke$arity$2(stack,interceptor)], 0)),interceptor,direction);
context__$1 = G__52878;
continue;
}
break;
}
});
re_frame.interceptor.enqueue = (function re_frame$interceptor$enqueue(context,interceptors){
return cljs.core.update.cljs$core$IFn$_invoke$arity$4(context,new cljs.core.Keyword(null,"queue","queue",1455835879),cljs.core.fnil.cljs$core$IFn$_invoke$arity$2(cljs.core.into,re_frame.interop.empty_queue),interceptors);
});
/**
 * Create a fresh context
 */
re_frame.interceptor.context = (function re_frame$interceptor$context(var_args){
var G__52851 = arguments.length;
switch (G__52851) {
case 2:
return re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2((arguments[(0)]),(arguments[(1)]));

break;
case 3:
return re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$3((arguments[(0)]),(arguments[(1)]),(arguments[(2)]));

break;
default:
throw (new Error(["Invalid arity: ",cljs.core.str.cljs$core$IFn$_invoke$arity$1(arguments.length)].join('')));

}
});

(re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2 = (function (event,interceptors){
return re_frame.interceptor.enqueue(re_frame.interceptor.assoc_coeffect(re_frame.interceptor.assoc_coeffect(cljs.core.PersistentArrayMap.EMPTY,new cljs.core.Keyword(null,"event","event",301435442),event),new cljs.core.Keyword(null,"original-event","original-event",2121330403),event),interceptors);
}));

(re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$3 = (function (event,interceptors,db){
return re_frame.interceptor.assoc_coeffect(re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2(event,interceptors),new cljs.core.Keyword(null,"db","db",993250759),db);
}));

(re_frame.interceptor.context.cljs$lang$maxFixedArity = 3);

/**
 * Called on completion of `:before` processing, this function prepares/modifies
 * `context` for the backwards sweep of processing in which an interceptor
 * chain's `:after` fns are called.
 * 
 *   At this point in processing, the `:queue` is empty and `:stack` holds all
 *   the previously run interceptors. So this function enables the backwards walk
 *   by priming `:queue` with what's currently in `:stack`
 */
re_frame.interceptor.change_direction = (function re_frame$interceptor$change_direction(context){
return re_frame.interceptor.enqueue(cljs.core.dissoc.cljs$core$IFn$_invoke$arity$2(context,new cljs.core.Keyword(null,"queue","queue",1455835879)),new cljs.core.Keyword(null,"stack","stack",-793405930).cljs$core$IFn$_invoke$arity$1(context));
});
/**
 * Executes the given chain (coll) of interceptors.
 * 
 * Each interceptor has this form:
 *     {:before  (fn [context] ...)     ;; returns possibly modified context
 *      :after   (fn [context] ...)}    ;; `identity` would be a noop
 * 
 * Walks the queue of interceptors from beginning to end, calling the
 * `:before` fn on each, then reverse direction and walk backwards,
 * calling the `:after` fn on each.
 * 
 * The last interceptor in the chain presumably wraps an event
 * handler fn. So the overall goal of the process is to "handle
 * the given event".
 * 
 * Thread a `context` through all calls. `context` has this form:
 * 
 *   {:coeffects {:event [:a-query-id :some-param]
 *                :db    <original contents of app-db>}
 *    :effects   {:db    <new value for app-db>
 *                :fx  [:dispatch [:an-event-id :param1]]}
 *    :queue     <a collection of further interceptors>
 *    :stack     <a collection of interceptors already walked>}
 * 
 * `context` has `:coeffects` and `:effects` which, if this was a web
 * server, would be somewhat analogous to `request` and `response`
 * respectively.
 * 
 * `coeffects` will contain data like `event` and the initial
 * state of `db` -  the inputs required by the event handler
 * (sitting presumably on the end of the chain), while handler-returned
 * side effects are put into `:effects` including, but not limited to,
 * new values for `db`.
 * 
 * The first few interceptors in a chain will likely have `:before`
 * functions which "prime" the `context` by adding the event, and
 * the current state of app-db into `:coeffects`. But interceptors can
 * add whatever they want to `:coeffects` - perhaps the event handler needs
 * some information from localstore, or a random number, or access to
 * a DataScript connection.
 * 
 * Equally, some interceptors in the chain will have `:after` fn
 * which can process the side effects accumulated into `:effects`
 * including but, not limited to, updates to app-db.
 * 
 * Through both stages (before and after), `context` contains a `:queue`
 * of interceptors yet to be processed, and a `:stack` of interceptors
 * already done.  In advanced cases, these values can be modified by the
 * functions through which the context is threaded.
 */
re_frame.interceptor.execute = (function re_frame$interceptor$execute(event_v,interceptors){
if(re_frame.trace.is_trace_enabled_QMARK_()){
var new_trace__52715__auto___52880 = cljs.core.merge.cljs$core$IFn$_invoke$arity$variadic(cljs.core.prim_seq.cljs$core$IFn$_invoke$arity$2([cljs.core.update.cljs$core$IFn$_invoke$arity$4(re_frame.trace._STAR_current_trace_STAR_,new cljs.core.Keyword(null,"tags","tags",1771418977),cljs.core.merge,new cljs.core.Keyword(null,"tags","tags",1771418977).cljs$core$IFn$_invoke$arity$1(new cljs.core.PersistentArrayMap(null, 1, [new cljs.core.Keyword(null,"tags","tags",1771418977),new cljs.core.PersistentArrayMap(null, 1, [new cljs.core.Keyword(null,"interceptors","interceptors",-1546782951),interceptors], null)], null))),cljs.core.dissoc.cljs$core$IFn$_invoke$arity$2(new cljs.core.PersistentArrayMap(null, 1, [new cljs.core.Keyword(null,"tags","tags",1771418977),new cljs.core.PersistentArrayMap(null, 1, [new cljs.core.Keyword(null,"interceptors","interceptors",-1546782951),interceptors], null)], null),new cljs.core.Keyword(null,"tags","tags",1771418977))], 0));
(re_frame.trace._STAR_current_trace_STAR_ = new_trace__52715__auto___52880);

} else {
}

return re_frame.interceptor.invoke_interceptors(re_frame.interceptor.change_direction(re_frame.interceptor.invoke_interceptors(re_frame.interceptor.context.cljs$core$IFn$_invoke$arity$2(event_v,interceptors),new cljs.core.Keyword(null,"before","before",-1633692388))),new cljs.core.Keyword(null,"after","after",594996914));
});

//# sourceMappingURL=re_frame.interceptor.js.map