"use strict";
var immutable_class_1 = require('immutable-class');
var chronoshift_1 = require('chronoshift');
var plywood_1 = require('plywood');
function isLiteral(ex) {
Eif (ex instanceof plywood_1.LiteralExpression)
return plywood_1.TimeRange.isTimeRange(ex.value) || plywood_1.Set.isSet(ex.value);
return false;
}
function isRelative(ex) {
if (ex instanceof plywood_1.ChainExpression) {
Iif (ex.type !== 'TIME_RANGE')
return false;
var expression = ex.expression;
Eif (expression instanceof plywood_1.RefExpression) {
return expression.name === FilterClause.NOW_REF_NAME || expression.name === FilterClause.MAX_TIME_REF_NAME;
}
}
return false;
}
var check;
var FilterClause = (function () {
function FilterClause(parameters) {
this.expression = parameters.expression;
var selection = parameters.selection;
if (isRelative(selection)) {
this.relative = true;
}
else Eif (isLiteral(selection)) {
this.relative = false;
}
else {
throw new Error("invalid expression " + selection.toString());
}
this.selection = selection;
this.exclude = parameters.exclude || false;
}
FilterClause.isFilterClause = function (candidate) {
return immutable_class_1.isInstanceOf(candidate, FilterClause);
};
FilterClause.evaluate = function (selection, now, maxTime, timezone) {
if (!selection)
return null;
var maxTimeMinuteTop = chronoshift_1.minute.shift(chronoshift_1.minute.floor(maxTime, timezone), timezone, 1);
var datum = {};
datum[FilterClause.NOW_REF_NAME] = now;
datum[FilterClause.MAX_TIME_REF_NAME] = maxTimeMinuteTop;
return selection.defineEnvironment({ timezone: timezone }).getFn()(datum, {});
};
FilterClause.fromExpression = function (ex) {
var exclude = false;
Iif (ex.lastAction() instanceof plywood_1.NotAction) {
ex = ex.popAction();
exclude = true;
}
var lastAction = ex.lastAction();
var dimExpression = ex.popAction();
Eif (lastAction instanceof plywood_1.InAction || lastAction instanceof plywood_1.OverlapAction) {
var selection = lastAction.expression;
Iif (selection.type === 'SET/TIME_RANGE') {
var literalSet = selection.getLiteralValue();
if (literalSet.size() > 1)
throw new Error('can not filter on multiple time range values');
selection = plywood_1.r(literalSet.elements[0]);
}
return new FilterClause({
expression: dimExpression,
selection: selection,
exclude: exclude
});
}
throw new Error("invalid expression " + ex.toString());
};
FilterClause.fromJS = function (parameters) {
var value = {
expression: plywood_1.Expression.fromJS(parameters.expression),
selection: plywood_1.Expression.fromJS(parameters.selection),
exclude: Boolean(parameters.exclude)
};
return new FilterClause(value);
};
FilterClause.prototype.valueOf = function () {
return {
expression: this.expression,
selection: this.selection,
exclude: this.exclude
};
};
FilterClause.prototype.toJS = function () {
var js = {
expression: this.expression.toJS(),
selection: this.selection.toJS()
};
if (this.exclude)
js.exclude = true;
return js;
};
FilterClause.prototype.toJSON = function () {
return this.toJS();
};
FilterClause.prototype.toString = function () {
return "[FilterClause: " + this.expression.toString() + "]";
};
FilterClause.prototype.equals = function (other) {
return FilterClause.isFilterClause(other) &&
this.expression.equals(other.expression) &&
this.selection.equals(other.selection) &&
this.exclude === other.exclude;
};
FilterClause.prototype.toExpression = function () {
var _a = this, expression = _a.expression, selection = _a.selection;
var ex = (selection.type === 'TIME_RANGE') ? expression.in(selection) : expression.overlap(selection);
Iif (this.exclude)
ex = ex.not();
return ex;
};
FilterClause.prototype.getTimeRange = function () {
if (this.relative)
return null;
var v = this.selection.getLiteralValue();
return plywood_1.TimeRange.isTimeRange(v) ? v : null;
};
FilterClause.prototype.getLiteralSet = function () {
Iif (this.relative)
return null;
var v = this.selection.getLiteralValue();
return plywood_1.TimeRange.isTimeRange(v) ? plywood_1.Set.fromJS([v]) : v;
};
FilterClause.prototype.changeSelection = function (selection) {
var value = this.valueOf();
value.selection = selection;
return new FilterClause(value);
};
FilterClause.prototype.evaluate = function (now, maxTime, timezone) {
Iif (!this.relative)
return this;
return this.changeSelection(plywood_1.r(FilterClause.evaluate(this.selection, now, maxTime, timezone)));
};
FilterClause.NOW_REF_NAME = 'n';
FilterClause.MAX_TIME_REF_NAME = 'm';
return FilterClause;
}());
exports.FilterClause = FilterClause;
check = FilterClause;
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