//
// Integration test of the geo code
//
// Basically, this tests adds a random number of docs with a random number of points,
// given a 2d environment of random precision which is either randomly earth-like or of 
// random bounds, and indexes these points after a random amount of points have been added
// with a random number of additional fields which correspond to whether the documents are
// in randomly generated circular, spherical, box, and box-polygon shapes (and exact), 
// queried randomly from a set of query types.  Each point is randomly either and object 
// or array, and all points and document data fields are nested randomly in arrays (or not).
//
// We approximate the user here as a random function :-)
//
// These random point fields can then be tested against all types of geo queries using these random shapes.
// 
// Tests can be easily reproduced by getting the test number from the output directly before a
// test fails, and hard-wiring that as the test number.
//


var randEnvironment = function(){
	
	// Normal earth environment
	if( Random.rand() < 0.5 ){
		return { max : 180, 
				 min : -180, 
				 bits : Math.floor( Random.rand() * 32 ) + 1, 
				 earth : true,
				 bucketSize : 360 / ( 4 * 1024 * 1024 * 1024 ) }
	}
	
	var scales = [ 0.0001, 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000, 100000 ]
	var scale = scales[ Math.floor( Random.rand() * scales.length ) ]
	var offset = Random.rand() * scale
	
    var max = Random.rand() * scale + offset
	var min = - Random.rand() * scale + offset
	var bits = Math.floor( Random.rand() * 32 ) + 1
	var range = max - min
    var bucketSize = range / ( 4 * 1024 * 1024 * 1024 )
    	
	return { max : max,
		     min : min,
		     bits : bits,
		     earth : false,
		     bucketSize : bucketSize }
	
}

var randPoint = function( env, query ) {
	
	if( query && Random.rand() > 0.5 )
		return query.exact
	
	if( env.earth )
		return [ Random.rand() * 360 - 180, Random.rand() * 180 - 90 ]
	
	var range = env.max - env.min
	return [ Random.rand() * range + env.min, Random.rand() * range + env.min ];
}

var randLocType = function( loc, wrapIn ){
	return randLocTypes( [ loc ], wrapIn )[0]
}

var randLocTypes = function( locs, wrapIn ) {
	
	var rLocs = []
	
	for( var i = 0; i < locs.length; i++ ){
		if( Random.rand() < 0.5 )
			rLocs.push( { x : locs[i][0], y : locs[i][1] } )
		else
			rLocs.push( locs[i] )
	}
	
	if( wrapIn ){
		var wrappedLocs = []
		for( var i = 0; i < rLocs.length; i++ ){
			var wrapper = {}
			wrapper[wrapIn] = rLocs[i]
			wrappedLocs.push( wrapper )
		}
		
		return wrappedLocs
	}
	
	return rLocs
	
}

var randDataType = function() {

	var scales = [ 1, 10, 100, 1000, 10000 ]
	var docScale = scales[ Math.floor( Random.rand() * scales.length ) ]	
	var locScale = scales[ Math.floor( Random.rand() * scales.length ) ]
	
	var numDocs = 40000
	var maxLocs = 40000
	// Make sure we don't blow past our test resources
	while( numDocs * maxLocs > 40000 ){
		numDocs = Math.floor( Random.rand() * docScale ) + 1
		maxLocs = Math.floor( Random.rand() * locScale ) + 1
	}
			
	return { numDocs : numDocs,
			 maxLocs : maxLocs }
	
}

var randQuery = function( env ) {
	
	var center = randPoint( env )
	
	var sphereRadius = -1
	var sphereCenter = null
	if( env.earth ){
		// Get a start point that doesn't require wrapping
		// TODO: Are we a bit too aggressive with wrapping issues?
		sphereRadius = Random.rand() * 45 * Math.PI / 180
		sphereCenter = randPoint( env )
		var i
		for( i = 0; i < 5; i++ ){
			var t = db.testSphere; t.drop(); t.ensureIndex({ loc : "2d" }, env )
			try{ t.find({ loc : { $within : { $centerSphere : [ sphereCenter, sphereRadius ] } } } ).count(); var err; if( err = db.getLastError() ) throw err;  }
			catch(e) { print( e ); continue }
			print( " Radius " + sphereRadius + " and center " + sphereCenter + " ok ! ")
			break;
		}
		if( i == 5 ) sphereRadius = -1;
	
	}
		
	var box = [ randPoint( env ), randPoint( env ) ]
	
	var boxPoly = [[ box[0][0], box[0][1] ], 
	               [ box[0][0], box[1][1] ], 
	               [ box[1][0], box[1][1] ], 
	               [ box[1][0], box[0][1] ] ]
	
	if( box[0][0] > box[1][0] ){
		var swap = box[0][0]
		box[0][0] = box[1][0]
		box[1][0] = swap
	}
	
	if( box[0][1] > box[1][1] ){
		var swap = box[0][1]
		box[0][1] = box[1][1]
		box[1][1] = swap
	}
	
	return { center : center,
		     radius : box[1][0] - box[0][0],
		     exact : randPoint( env ),
		     sphereCenter : sphereCenter,
		     sphereRadius : sphereRadius,
			 box : box,
			 boxPoly : boxPoly }
	
}


var resultTypes = {
"exact" : function( loc ){
	return query.exact[0] == loc[0] && query.exact[1] == loc[1]
},
"center" : function( loc ){
	return Geo.distance( query.center, loc ) <= query.radius
},
"box" : function( loc ){
	return loc[0] >= query.box[0][0] && loc[0] <= query.box[1][0] &&
	 	   loc[1] >= query.box[0][1] && loc[1] <= query.box[1][1]
	
}, 
"sphere" : function( loc ){
	return ( query.sphereRadius >= 0 ? ( Geo.sphereDistance( query.sphereCenter, loc ) <= query.sphereRadius ) : false )
}, 
"poly" : function( loc ){
	return loc[0] >= query.box[0][0] && loc[0] <= query.box[1][0] &&
 	       loc[1] >= query.box[0][1] && loc[1] <= query.box[1][1] 
}}

var queryResults = function( locs, query, results ){
		
	if( ! results["center"] ){	
		for( var type in resultTypes ){
			results[type] = {
			    docsIn : 0,
				docsOut : 0,
				locsIn : 0,
				locsOut : 0
			}
		}		
	}
	
	var indResults = {}
	for( var type in resultTypes ){
		indResults[type] = {
		    docIn : false,
			locsIn : 0,
			locsOut : 0
		}
	}
	
	for( var type in resultTypes ){
		
		var docIn = false
		for( var i = 0; i < locs.length; i++ ){
			if( resultTypes[type]( locs[i] ) ){
				results[type].locsIn++
				indResults[type].locsIn++
				indResults[type].docIn = true
			}
			else{
				results[type].locsOut++
				indResults[type].locsOut++
			}
		}
		if( indResults[type].docIn ) results[type].docsIn++
		else results[type].docsOut++
		
	}
	
	return indResults
	
}

var randQueryAdditions = function( doc, indResults ){
	
	for( var type in resultTypes ){
		var choice = Random.rand()
		if( Random.rand() < 0.25 )
			doc[type] = ( indResults[type].docIn ? { docIn : "yes" } : { docIn : "no" } )
		else if( Random.rand() < 0.5 )
			doc[type] = ( indResults[type].docIn ? { docIn : [ "yes" ] } : { docIn : [ "no" ] } )
		else if( Random.rand() < 0.75 )
			doc[type] = ( indResults[type].docIn ? [ { docIn : "yes" } ] : [ { docIn : "no" } ] )
		else
			doc[type] = ( indResults[type].docIn ? [ { docIn : [ "yes" ] } ] : [ { docIn : [ "no" ] } ] )	
	}
	
}

var randIndexAdditions = function( indexDoc ){
	
	for( var type in resultTypes ){
		
		if( Random.rand() < 0.5 ) continue;
		
		var choice = Random.rand()
		if( Random.rand() < 0.5 )
			indexDoc[type] = 1
		else
			indexDoc[type + ".docIn"] = 1	
	
	}
	
}

var randYesQuery = function(){
	
	var choice = Math.floor( Random.rand() * 7 )
	if( choice == 0 )
		return  { $ne : "no" }
	else if( choice == 1 )
		return "yes"
	else if( choice == 2 )
		return /^yes/
	else if( choice == 3 )
		return { $in : [ "good", "yes", "ok" ] }
	else if( choice == 4 )
		return { $exists : true }
	else if( choice == 5 )
		return { $nin : [ "bad", "no", "not ok" ] }
	else if( choice == 6 )
		return { $not : /^no/ }
}

var locArray = function( loc ){
	if( loc.x ) return [ loc.x, loc.y ]
	if( ! loc.length ) return [ loc[0], loc[1] ]
	return loc
}

var locsArray = function( locs ){
	if( locs.loc ){
		arr = []
		for( var i = 0; i < locs.loc.length; i++ ) arr.push( locArray( locs.loc[i] ) )
		return arr
	}
	else{
		arr = []
		for( var i = 0; i < locs.length; i++ ) arr.push( locArray( locs[i].loc ) )
		return arr
	}
}

var minBoxSize = function( env, box ){
    return env.bucketSize * Math.pow( 2, minBucketScale( env, box ) )
}

var minBucketScale = function( env, box ){
        
    if( box.length && box[0].length )
        box = [ box[0][0] - box[1][0], box[0][1] - box[1][1] ]
    
    if( box.length )
        box = Math.max( box[0], box[1] )
        
    print( box )
    print( env.bucketSize )
        
    return Math.ceil( Math.log( box / env.bucketSize ) / Math.log( 2 ) )

}

// TODO:  Add spherical $uniqueDocs tests
var numTests = 100

// Our seed will change every time this is run, but 
// each individual test will be reproducible given
// that seed and test number
var seed = new Date().getTime()

for ( var test = 0; test < numTests; test++ ) {
	
	Random.srand( seed + test );
	//Random.srand( 42240 )
	//Random.srand( 7344 )
	var t = db.testAllGeo
	t.drop()
	
	print( "Generating test environment #" + test )
	var env = randEnvironment()
	//env.bits = 11
	var query = randQuery( env )
	var data = randDataType()
	//data.numDocs = 100; data.maxLocs = 3;
	var results = {}
	var totalPoints = 0
	print( "Calculating target results for " + data.numDocs + " docs with max " + data.maxLocs + " locs " )

	// Index after a random number of docs added
	var indexIt = Math.floor( Random.rand() * data.numDocs )
		
	for ( var i = 0; i < data.numDocs; i++ ) {

		if( indexIt == i ){
			var indexDoc = { "locs.loc" : "2d" }
			randIndexAdditions( indexDoc )
			
			// printjson( indexDoc )
			
			t.ensureIndex( indexDoc, env )
			assert.isnull( db.getLastError() )
		}
		
		var numLocs = Math.floor( Random.rand() * data.maxLocs + 1 )
		totalPoints += numLocs
		
		var multiPoint = []
		for ( var p = 0; p < numLocs; p++ ) {
			var point = randPoint( env, query )
			multiPoint.push( point )
		}

		var indResults = queryResults( multiPoint, query, results )
		
		var doc
		// Nest the keys differently
		if( Random.rand() < 0.5 )
			doc = { locs : { loc : randLocTypes( multiPoint ) } }
		else
			doc = { locs : randLocTypes( multiPoint, "loc" ) }
		
		randQueryAdditions( doc, indResults )
		
		//printjson( doc )
		doc._id = i
		t.insert( doc )
		
	}

	printjson( { seed : seed,
				 test: test,
				 env : env,
				 query : query,
				 data : data,
				 results : results } )
				 
	
	// exact
	print( "Exact query..." )
	assert.eq( results.exact.docsIn, t.find( { "locs.loc" : randLocType( query.exact ), "exact.docIn" : randYesQuery() } ).count() )
		
	// $center
	print( "Center query..." )
	print( "Min box : " + minBoxSize( env, query.radius ) )
	assert.eq( results.center.docsIn, t.find( { "locs.loc" : { $within : { $center : [ query.center, query.radius ], $uniqueDocs : 1 } }, "center.docIn" : randYesQuery() } ).count() )
	assert.eq( results.center.locsIn, t.find( { "locs.loc" : { $within : { $center : [ query.center, query.radius ], $uniqueDocs : false } }, "center.docIn" : randYesQuery() } ).count() )
	if( query.sphereRadius >= 0 ){
		print( "Center sphere query...")
		// $centerSphere
		assert.eq( results.sphere.docsIn, t.find( { "locs.loc" : { $within : { $centerSphere : [ query.sphereCenter, query.sphereRadius ] } }, "sphere.docIn" : randYesQuery() } ).count() )
		assert.eq( results.sphere.locsIn, t.find( { "locs.loc" : { $within : { $centerSphere : [ query.sphereCenter, query.sphereRadius ], $uniqueDocs : 0.0 } }, "sphere.docIn" : randYesQuery() } ).count() )
	}
	
	// $box
	print( "Box query..." )
	assert.eq( results.box.docsIn, t.find( { "locs.loc" : { $within : { $box : query.box, $uniqueDocs : true } }, "box.docIn" : randYesQuery() } ).count() )
	assert.eq( results.box.locsIn, t.find( { "locs.loc" : { $within : { $box : query.box, $uniqueDocs : false } }, "box.docIn" : randYesQuery() } ).count() )
	
	// $polygon
	print( "Polygon query..." )
	assert.eq( results.poly.docsIn, t.find( { "locs.loc" : { $within : { $polygon : query.boxPoly } }, "poly.docIn" : randYesQuery() } ).count() )
	assert.eq( results.poly.locsIn, t.find( { "locs.loc" : { $within : { $polygon : query.boxPoly, $uniqueDocs : 0 } }, "poly.docIn" : randYesQuery() } ).count() )
					 
	// $near
	print( "Near query..." )
	assert.eq( results.center.locsIn > 100 ? 100 : results.center.locsIn, t.find( { "locs.loc" : { $near : query.center, $maxDistance : query.radius } } ).count( true ) )

	if( query.sphereRadius >= 0 ){
		print( "Near sphere query...")
		// $centerSphere
		assert.eq( results.sphere.locsIn > 100 ? 100 : results.sphere.locsIn, t.find( { "locs.loc" : { $nearSphere : query.sphereCenter, $maxDistance : query.sphereRadius } } ).count( true ) )
	}
	
	
	// geoNear
	// results limited by size of objects
	if( data.maxLocs < 100 ){
	    
	    // GeoNear query
	    print( "GeoNear query..." )
	    assert.eq( results.center.locsIn > 100 ? 100 : results.center.locsIn, t.getDB().runCommand({ geoNear : "testAllGeo", near : query.center, maxDistance : query.radius }).results.length )
	    // GeoNear query
        assert.eq( results.center.docsIn > 100 ? 100 : results.center.docsIn, t.getDB().runCommand({ geoNear : "testAllGeo", near : query.center, maxDistance : query.radius, uniqueDocs : true }).results.length )
       
	    
		var num = 2 * results.center.locsIn;
		if( num > 200 ) num = 200;
		
		var output = db.runCommand( {
			geoNear : "testAllGeo", 
			near : query.center, 
			maxDistance : query.radius ,
			includeLocs : true,
			num : num } ).results
				
		assert.eq( Math.min( 200, results.center.locsIn ), output.length )
	
		var distance = 0;
		for ( var i = 0; i < output.length; i++ ) {
			var retDistance = output[i].dis
			var retLoc = locArray( output[i].loc )
			
			// print( "Dist from : " + results[i].loc + " to " + startPoint + " is "
			// + retDistance + " vs " + radius )
			
			var arrLocs = locsArray( output[i].obj.locs )
						
			assert.contains( retLoc, arrLocs )
			
			// printjson( arrLocs )
			
			var distInObj = false
			for ( var j = 0; j < arrLocs.length && distInObj == false; j++ ) {
				var newDistance = Geo.distance( locArray( query.center ) , arrLocs[j] )
				distInObj = ( newDistance >= retDistance - 0.0001 && newDistance <= retDistance + 0.0001 )
			}
			
			assert( distInObj )
			assert.between( retDistance - 0.0001 , Geo.distance( locArray( query.center ), retLoc ), retDistance + 0.0001 )
			assert.lte( retDistance, query.radius )
			assert.gte( retDistance, distance )
			distance = retDistance
		}
		
	}
	
	//break;
	
	
}