import {
  __privateAdd,
  __privateGet,
  __privateMethod,
  __privateSet
} from "./chunk-PXG64RU4.js";

// src/queriesObserver.ts
import { notifyManager } from "./notifyManager.js";
import { QueryObserver } from "./queryObserver.js";
import { Subscribable } from "./subscribable.js";
import { replaceEqualDeep, shallowEqualObjects } from "./utils.js";
function difference(array1, array2) {
  const excludeSet = new Set(array2);
  return array1.filter((x) => !excludeSet.has(x));
}
function replaceAt(array, index, value) {
  const copy = array.slice(0);
  copy[index] = value;
  return copy;
}
var _client, _result, _queries, _options, _observers, _combinedResult, _lastCombine, _lastResult, _observerMatches, _QueriesObserver_instances, trackResult_fn, combineResult_fn, findMatchingObservers_fn, onUpdate_fn, notify_fn;
var QueriesObserver = class extends Subscribable {
  constructor(client, queries, options) {
    super();
    __privateAdd(this, _QueriesObserver_instances);
    __privateAdd(this, _client);
    __privateAdd(this, _result);
    __privateAdd(this, _queries);
    __privateAdd(this, _options);
    __privateAdd(this, _observers);
    __privateAdd(this, _combinedResult);
    __privateAdd(this, _lastCombine);
    __privateAdd(this, _lastResult);
    __privateAdd(this, _observerMatches, []);
    __privateSet(this, _client, client);
    __privateSet(this, _options, options);
    __privateSet(this, _queries, []);
    __privateSet(this, _observers, []);
    __privateSet(this, _result, []);
    this.setQueries(queries);
  }
  onSubscribe() {
    if (this.listeners.size === 1) {
      __privateGet(this, _observers).forEach((observer) => {
        observer.subscribe((result) => {
          __privateMethod(this, _QueriesObserver_instances, onUpdate_fn).call(this, observer, result);
        });
      });
    }
  }
  onUnsubscribe() {
    if (!this.listeners.size) {
      this.destroy();
    }
  }
  destroy() {
    this.listeners = /* @__PURE__ */ new Set();
    __privateGet(this, _observers).forEach((observer) => {
      observer.destroy();
    });
  }
  setQueries(queries, options) {
    __privateSet(this, _queries, queries);
    __privateSet(this, _options, options);
    if (process.env.NODE_ENV !== "production") {
      const queryHashes = queries.map(
        (query) => __privateGet(this, _client).defaultQueryOptions(query).queryHash
      );
      if (new Set(queryHashes).size !== queryHashes.length) {
        console.warn(
          "[QueriesObserver]: Duplicate Queries found. This might result in unexpected behavior."
        );
      }
    }
    notifyManager.batch(() => {
      const prevObservers = __privateGet(this, _observers);
      const newObserverMatches = __privateMethod(this, _QueriesObserver_instances, findMatchingObservers_fn).call(this, __privateGet(this, _queries));
      newObserverMatches.forEach(
        (match) => match.observer.setOptions(match.defaultedQueryOptions)
      );
      const newObservers = newObserverMatches.map((match) => match.observer);
      const newResult = newObservers.map(
        (observer) => observer.getCurrentResult()
      );
      const hasLengthChange = prevObservers.length !== newObservers.length;
      const hasIndexChange = newObservers.some(
        (observer, index) => observer !== prevObservers[index]
      );
      const hasStructuralChange = hasLengthChange || hasIndexChange;
      const hasResultChange = hasStructuralChange ? true : newResult.some((result, index) => {
        const prev = __privateGet(this, _result)[index];
        return !prev || !shallowEqualObjects(result, prev);
      });
      if (!hasStructuralChange && !hasResultChange) return;
      if (hasStructuralChange) {
        __privateSet(this, _observerMatches, newObserverMatches);
        __privateSet(this, _observers, newObservers);
      }
      __privateSet(this, _result, newResult);
      if (!this.hasListeners()) return;
      if (hasStructuralChange) {
        difference(prevObservers, newObservers).forEach((observer) => {
          observer.destroy();
        });
        difference(newObservers, prevObservers).forEach((observer) => {
          observer.subscribe((result) => {
            __privateMethod(this, _QueriesObserver_instances, onUpdate_fn).call(this, observer, result);
          });
        });
      }
      __privateMethod(this, _QueriesObserver_instances, notify_fn).call(this);
    });
  }
  getCurrentResult() {
    return __privateGet(this, _result);
  }
  getQueries() {
    return __privateGet(this, _observers).map((observer) => observer.getCurrentQuery());
  }
  getObservers() {
    return __privateGet(this, _observers);
  }
  getOptimisticResult(queries, combine) {
    const matches = __privateMethod(this, _QueriesObserver_instances, findMatchingObservers_fn).call(this, queries);
    const result = matches.map(
      (match) => match.observer.getOptimisticResult(match.defaultedQueryOptions)
    );
    return [
      result,
      (r) => {
        return __privateMethod(this, _QueriesObserver_instances, combineResult_fn).call(this, r ?? result, combine);
      },
      () => {
        return __privateMethod(this, _QueriesObserver_instances, trackResult_fn).call(this, result, matches);
      }
    ];
  }
};
_client = new WeakMap();
_result = new WeakMap();
_queries = new WeakMap();
_options = new WeakMap();
_observers = new WeakMap();
_combinedResult = new WeakMap();
_lastCombine = new WeakMap();
_lastResult = new WeakMap();
_observerMatches = new WeakMap();
_QueriesObserver_instances = new WeakSet();
trackResult_fn = function(result, matches) {
  return matches.map((match, index) => {
    const observerResult = result[index];
    return !match.defaultedQueryOptions.notifyOnChangeProps ? match.observer.trackResult(observerResult, (accessedProp) => {
      matches.forEach((m) => {
        m.observer.trackProp(accessedProp);
      });
    }) : observerResult;
  });
};
combineResult_fn = function(input, combine) {
  if (combine) {
    if (!__privateGet(this, _combinedResult) || __privateGet(this, _result) !== __privateGet(this, _lastResult) || combine !== __privateGet(this, _lastCombine)) {
      __privateSet(this, _lastCombine, combine);
      __privateSet(this, _lastResult, __privateGet(this, _result));
      __privateSet(this, _combinedResult, replaceEqualDeep(
        __privateGet(this, _combinedResult),
        combine(input)
      ));
    }
    return __privateGet(this, _combinedResult);
  }
  return input;
};
findMatchingObservers_fn = function(queries) {
  const prevObserversMap = /* @__PURE__ */ new Map();
  __privateGet(this, _observers).forEach((observer) => {
    const key = observer.options.queryHash;
    if (!key) return;
    const previousObservers = prevObserversMap.get(key);
    if (previousObservers) {
      previousObservers.push(observer);
    } else {
      prevObserversMap.set(key, [observer]);
    }
  });
  const observers = [];
  queries.forEach((options) => {
    var _a;
    const defaultedOptions = __privateGet(this, _client).defaultQueryOptions(options);
    const match = (_a = prevObserversMap.get(defaultedOptions.queryHash)) == null ? void 0 : _a.shift();
    const observer = match ?? new QueryObserver(__privateGet(this, _client), defaultedOptions);
    observers.push({
      defaultedQueryOptions: defaultedOptions,
      observer
    });
  });
  return observers;
};
onUpdate_fn = function(observer, result) {
  const index = __privateGet(this, _observers).indexOf(observer);
  if (index !== -1) {
    __privateSet(this, _result, replaceAt(__privateGet(this, _result), index, result));
    __privateMethod(this, _QueriesObserver_instances, notify_fn).call(this);
  }
};
notify_fn = function() {
  var _a;
  if (this.hasListeners()) {
    const previousResult = __privateGet(this, _combinedResult);
    const newTracked = __privateMethod(this, _QueriesObserver_instances, trackResult_fn).call(this, __privateGet(this, _result), __privateGet(this, _observerMatches));
    const newResult = __privateMethod(this, _QueriesObserver_instances, combineResult_fn).call(this, newTracked, (_a = __privateGet(this, _options)) == null ? void 0 : _a.combine);
    if (previousResult !== newResult) {
      notifyManager.batch(() => {
        this.listeners.forEach((listener) => {
          listener(__privateGet(this, _result));
        });
      });
    }
  }
};
export {
  QueriesObserver
};
//# sourceMappingURL=queriesObserver.js.map