//
// Copyright (c) 2023 Oguz Kupusoglu. All rights reserved.
//
// IN NO EVENT SHALL OGUZ KUPUSOGLU BE LIABLE TO ANY PARTY FOR
// DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
// LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION,
// EVEN IF OGUZ KUPUSOGLU HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
//

#ifndef FOTODB_H
#define FOTODB_H

#include <stdbool.h>
#include <stdint.h>

#define EXPORTED __attribute__((__visibility__("default")))

///////////////////////////////////////////////////////////////////////////////////////////////////

typedef enum : int32_t {
    UNKNOWN_ALTITUDE_REF = 0, // default
    ABOVE_SEA_LEVEL      = 1,
    BELOW_SEA_LEVEL      = 2
} FdbAltitudeRef;

typedef enum : int32_t {
    UNKNOWN_IMAGE_DIRECTION_REF = 0, // default
    TRUE_DIRECTION              = 1,
    MAGNETIC_DIRECTION          = 2
} FdbImageDirectionRef;

typedef enum : int32_t {
    BIG_ENDIAN    = 0, // default
    LITTLE_ENDIAN = 1
} FdbByteOrder;

//
// see:
// Exif Orientation Tag (Feb 17 2002)
//     http://sylvana.net/jpegcrop/exif_orientation.html
//
// see:
// EXIF Orientation Handling Is a Ghetto
//     http://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto/
//
// see:
// UIImageOrientation / EXIF orientation sample images
//     http://www.galloway.me.uk/2012/01/uiimageorientation-exif-orientation-sample-images/
//
// note that the symbols are named in the WhatIsInRow0_WhatIsInColumn0 pattern
//
typedef enum : int32_t {
    UNKNOWN_ORIENTATION = 0, // default: Orientation is not specified
    TOP_LEFT            = 1, // row0: visual top of the image
                             // column0: visual left-hand side of the image
                             // rotation necessary: none
    TOP_RIGHT           = 2, // row0: visual top of the image
                             // column0: visual right-hand side of the image
                             // rotation necessary: reverse horizontally
    BOTTOM_RIGHT        = 3, // row0: visual bottom of the image
                             // column0: visual right-hand side of the image
                             // rotation necessary: clockwise 180 degrees
    BOTTOM_LEFT         = 4, // row0: visual bottom of the image
                             // column0: visual left-hand side of the image
                             // rotation necessary: reverse vertically
    LEFT_TOP            = 5, // row0: visual left-hand side of the image
                             // column0: visual top of the image
                             // rotation necessary: clockwise 90 degrees and
                             // reverse horizontally
    RIGHT_TOP           = 6, // row0: visual right-hand side of the image
                             // column0: visual top of the image
                             // rotation necessary: clockwise 90 degrees
    RIGHT_BOTTOM        = 7, // row0: visual right-hand side of the image
                             // column0: visual bottom of the image
                             // rotation necessary: counter clockwise 90 degrees and
                             // reverse horizontally
    LEFT_BOTTOM         = 8, // row0: visual left-hand side of the image
                             // column0: visual bottom of the image
                             // rotation necessary: counter clockwise 90 degrees
} FdbOrientation;

typedef struct {
    int length;
    char* bytes;
} FdbData;

typedef struct {
    int numerator;
    int denominator;
} FdbRational;

typedef struct {
    double               latitude;
    double               longitude;
    FdbAltitudeRef       altitude_ref;      // default UNKNOWN_ALTITUDE_REF
    double               altitude;          // default 0.0
    FdbImageDirectionRef img_direction_ref; // default UNKNOWN_IMAGE_DIRECTION_REF
    double               img_direction;     // default 0.0
} FdbGps;

///////////////////////////////////////////////////////////////////////////////////////////////////

EXPORTED bool fdbInit(const char* const key);

EXPORTED bool fdbOpenPhoto(const char* filename);

EXPORTED bool fdbLoadPhoto(const FdbData* dataptr);

EXPORTED bool fdbHasExif();

EXPORTED void fdbClosePhoto();

EXPORTED void fdbClearData(FdbData* dataptr);

EXPORTED int fdbGetPhotoSize();

EXPORTED FdbByteOrder fdbGetExifByteOrder();

EXPORTED bool fdbGetPhotoWithoutExif(FdbData* dataptr);

EXPORTED bool fdbGetMake(FdbData* dataptr);

EXPORTED bool fdbGetModel(FdbData* dataptr);

EXPORTED bool fdbGetDateTime(FdbData* dataptr);

EXPORTED bool fdbGetTimeZone(FdbData* dataptr);

EXPORTED bool fdbGetFlashFired(bool* flashptr);

EXPORTED bool fdbGetPhotoDimensions(int* widthptr, int* heightptr);

EXPORTED bool fdbGetPhotoOrientation(FdbOrientation* orientationptr);

EXPORTED bool fdbGetShutterSpeedValue(FdbRational* rationalptr);

EXPORTED bool fdbGetPhoto(FdbData* dataptr);

EXPORTED bool fdbGetThumbnail(FdbData* dataptr);

EXPORTED bool fdbGetGps(FdbGps* gpsptr);

EXPORTED bool fdbDeleteGps();

EXPORTED bool fdbGetUserComment(FdbData* dataptr);

// always terminates the user comment with a null char
EXPORTED bool fdbSetUserComment(const char* byteptr);

EXPORTED bool fdbDeleteUserComment();

EXPORTED bool fdbGetCopyright(FdbData* dataptr);

EXPORTED bool fdbSetCopyright(const char* byteptr);

EXPORTED bool fdbDeleteCopyright();

EXPORTED bool fdbGetImageDescription(FdbData* dataptr);

EXPORTED bool fdbSetImageDescription(const char* byteptr);

EXPORTED bool fdbDeleteImageDescription();

EXPORTED bool fdbGetArtist(FdbData* dataptr);

EXPORTED bool fdbSetArtist(const char* byteptr);

EXPORTED bool fdbDeleteArtist();

EXPORTED bool fdbGetFNumber(FdbRational* rationalptr);

EXPORTED bool fdbGetFocalLengthIn35mmFormat(int* flin35mmptr);

#endif // FOTODB_H