/*
 Copyright (c) 2012-2014, Pierre-Olivier Latour
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.
 * The name of Pierre-Olivier Latour may not be used to endorse
 or promote products derived from this software without specific
 prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL PIERRE-OLIVIER LATOUR BE LIABLE FOR ANY
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import <TargetConditionals.h>

#import "GCDWebServerRequest.h"
#import "GCDWebServerResponse.h"

typedef NS_ENUM(int, GCDWebServerLogLevel) {
  kGCDWebServerLogLevel_Debug = 0,  // Only available if "NDEBUG" is not defined when building
  kGCDWebServerLogLevel_Verbose,
  kGCDWebServerLogLevel_Info,
  kGCDWebServerLogLevel_Warning,
  kGCDWebServerLogLevel_Error,
  kGCDWebServerLogLevel_Exception,
};

typedef GCDWebServerRequest* (^GCDWebServerMatchBlock)(NSString* requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery);
typedef GCDWebServerResponse* (^GCDWebServerProcessBlock)(GCDWebServerRequest* request);

extern NSString* const GCDWebServerOption_Port;  // NSNumber / NSUInteger (default is 0 i.e. use a random port)
extern NSString* const GCDWebServerOption_BonjourName;  // NSString (default is empty string i.e. use computer name)
extern NSString* const GCDWebServerOption_MaxPendingConnections;  // NSNumber / NSUInteger (default is 16)
extern NSString* const GCDWebServerOption_ServerName;  // NSString (default is server class name)
extern NSString* const GCDWebServerOption_AuthenticationMethod;  // One of "GCDWebServerAuthenticationMethod_..." (default is nil i.e. no authentication)
extern NSString* const GCDWebServerOption_AuthenticationRealm;  // NSString (default is server name)
extern NSString* const GCDWebServerOption_AuthenticationUser;  // NSString
extern NSString* const GCDWebServerOption_AuthenticationPassword;  // NSString
extern NSString* const GCDWebServerOption_ConnectionClass;  // Subclass of GCDWebServerConnection (default is GCDWebServerConnection class)
extern NSString* const GCDWebServerOption_AutomaticallyMapHEADToGET;  // NSNumber / BOOL (default is YES)
extern NSString* const GCDWebServerOption_ConnectedStateCoalescingInterval;  // NSNumber / double (default is 1.0 seconds - set to <=0.0 to disable coaslescing of -webServerDidConnect: / -webServerDidDisconnect:)
#if TARGET_OS_IPHONE
extern NSString* const GCDWebServerOption_AutomaticallySuspendInBackground;  // NSNumber / BOOL (default is YES)
#endif

extern NSString* const GCDWebServerAuthenticationMethod_Basic;
extern NSString* const GCDWebServerAuthenticationMethod_DigestAccess;

@class GCDWebServer;

// These methods are always called on main thread
@protocol GCDWebServerDelegate <NSObject>
@optional
- (void)webServerDidStart:(GCDWebServer*)server;
- (void)webServerDidConnect:(GCDWebServer*)server;  // Called when first connection is opened
- (void)webServerDidDisconnect:(GCDWebServer*)server;  // Called when last connection is closed
- (void)webServerDidStop:(GCDWebServer*)server;
@end

@interface GCDWebServer : NSObject
@property(nonatomic, assign) id<GCDWebServerDelegate> delegate;
@property(nonatomic, readonly, getter=isRunning) BOOL running;
@property(nonatomic, readonly) NSUInteger port;  // Only non-zero if running
@property(nonatomic, readonly) NSString* bonjourName;  // Only non-nil if Bonjour registration is active
- (instancetype)init;
- (void)addHandlerWithMatchBlock:(GCDWebServerMatchBlock)matchBlock processBlock:(GCDWebServerProcessBlock)processBlock;
- (void)removeAllHandlers;

- (BOOL)start;  // Default is port 8080 (OS X & iOS Simulator) or 80 (iOS) and computer / device name for Bonjour
- (BOOL)startWithPort:(NSUInteger)port bonjourName:(NSString*)name;  // Pass nil name to disable Bonjour or empty string to use computer name
- (BOOL)startWithOptions:(NSDictionary*)options;
- (void)stop;  // Does not abort any currently opened connections
@end

@interface GCDWebServer (Extensions)
@property(nonatomic, readonly) NSURL* serverURL;  // Only non-nil if server is running
@property(nonatomic, readonly) NSURL* bonjourServerURL;  // Only non-nil if server is running and Bonjour registration is active
#if !TARGET_OS_IPHONE
- (BOOL)runWithPort:(NSUInteger)port bonjourName:(NSString*)name;
- (BOOL)runWithOptions:(NSDictionary*)options;  // Starts then automatically stops on SIGINT i.e. Ctrl-C (use on main thread only)
#endif
@end

@interface GCDWebServer (Handlers)
- (void)addDefaultHandlerForMethod:(NSString*)method requestClass:(Class)aClass processBlock:(GCDWebServerProcessBlock)block;
- (void)addHandlerForMethod:(NSString*)method path:(NSString*)path requestClass:(Class)aClass processBlock:(GCDWebServerProcessBlock)block;  // Path is case-insensitive
- (void)addHandlerForMethod:(NSString*)method pathRegex:(NSString*)regex requestClass:(Class)aClass processBlock:(GCDWebServerProcessBlock)block;  // Regular expression is case-insensitive
@end

@interface GCDWebServer (GETHandlers)
- (void)addGETHandlerForPath:(NSString*)path staticData:(NSData*)staticData contentType:(NSString*)contentType cacheAge:(NSUInteger)cacheAge;  // Path is case-insensitive
- (void)addGETHandlerForPath:(NSString*)path filePath:(NSString*)filePath isAttachment:(BOOL)isAttachment cacheAge:(NSUInteger)cacheAge allowRangeRequests:(BOOL)allowRangeRequests;  // Path is case-insensitive
- (void)addGETHandlerForBasePath:(NSString*)basePath directoryPath:(NSString*)directoryPath indexFilename:(NSString*)indexFilename cacheAge:(NSUInteger)cacheAge allowRangeRequests:(BOOL)allowRangeRequests;  // Base path is recursive and case-sensitive
@end

@interface GCDWebServer (Logging)
#ifndef __GCDWEBSERVER_LOGGING_HEADER__
+ (void)setLogLevel:(GCDWebServerLogLevel)level;  // Default level is DEBUG or INFO if "NDEBUG" is defined when building (it can also be set at runtime with the "logLevel" environment variable)
#endif
- (void)logVerbose:(NSString*)format, ... NS_FORMAT_FUNCTION(1,2);
- (void)logInfo:(NSString*)format, ... NS_FORMAT_FUNCTION(1,2);
- (void)logWarning:(NSString*)format, ... NS_FORMAT_FUNCTION(1,2);
- (void)logError:(NSString*)format, ... NS_FORMAT_FUNCTION(1,2);
@end

#ifdef __GCDWEBSERVER_ENABLE_TESTING__

@interface GCDWebServer (Testing)
@property(nonatomic, getter=isRecordingEnabled) BOOL recordingEnabled;  // Creates files in the current directory containing the raw data for all requests and responses (directory most NOT contain prior recordings)
- (NSInteger)runTestsWithOptions:(NSDictionary*)options inDirectory:(NSString*)path;  // Returns number of failed tests or -1 if server failed to start
@end

#endif
