#include <stdlib.h>
#include <string.h>

static char *alloc_json(const char *s) {
    size_t len = strlen(s);
    char *copy = (char *)malloc(len + 1);
    memcpy(copy, s, len);
    copy[len] = '\0';
    return copy;
}

static int stub_access_rc = 0;
static const char *stub_albums_json = "{\"albums\":[]}";
static const char *stub_assets_json = "{\"assets\":[]}";
static const char *stub_tree_json = "{\"collections\":[]}";
static int stub_export_rc = 0;
static int stub_export_originals_rc = 0;
static int stub_backup_all_rc = 0;
static int stub_albums_null = 0;
static int stub_assets_null = 0;
static int stub_tree_null = 0;
static int stub_cancelled = 0;
static const char *stub_export_preview_json = NULL;
static const char *stub_export_original_json = NULL;

static char *maybe_alloc_json(const char *s) {
    if (!s) return NULL;
    return alloc_json(s);
}

void photos_test_set_access(int rc) { stub_access_rc = rc; }
void photos_test_set_albums(const char *json) { stub_albums_json = json; stub_albums_null = 0; }
void photos_test_set_assets(const char *json) { stub_assets_json = json; stub_assets_null = 0; }
void photos_test_set_tree(const char *json) { stub_tree_json = json; stub_tree_null = 0; }
void photos_test_set_export_rc(int rc) { stub_export_rc = rc; }
void photos_test_set_export_originals_rc(int rc) { stub_export_originals_rc = rc; }
void photos_test_set_backup_all_rc(int rc) { stub_backup_all_rc = rc; }
void photos_test_set_albums_null(void) { stub_albums_null = 1; }
void photos_test_set_assets_null(void) { stub_assets_null = 1; }
void photos_test_set_tree_null(void) { stub_tree_null = 1; }

int photos_request_access(void) { return stub_access_rc; }

char *photos_list_albums_json(void) {
    if (stub_albums_null) return NULL;
    return alloc_json(stub_albums_json);
}

char *photos_list_assets_json(const char *album_id) {
    (void)album_id;
    if (stub_assets_null) return NULL;
    return alloc_json(stub_assets_json);
}

char *photos_export_preview_json(const char *asset_id, const char *output_dir, int target_size, int index) {
    (void)asset_id;
    (void)output_dir;
    (void)target_size;
    (void)index;
    return maybe_alloc_json(stub_export_preview_json);
}

char *photos_export_original_json(const char *asset_id, const char *output_dir, int index) {
    (void)asset_id;
    (void)output_dir;
    (void)index;
    return maybe_alloc_json(stub_export_original_json);
}

char *photos_list_tree_json(void) {
    if (stub_tree_null) return NULL;
    return alloc_json(stub_tree_json);
}

int photos_export_album_previews(const char *album_id, const char *output_dir, int target_size) {
    (void)album_id;
    (void)output_dir;
    (void)target_size;
    return stub_export_rc;
}

int photos_export_album_originals(const char *album_id, const char *output_dir) {
    (void)album_id;
    (void)output_dir;
    return stub_export_originals_rc;
}

int photos_backup_all(const char *output_dir, int target_size, int originals) {
    (void)output_dir;
    (void)target_size;
    (void)originals;
    return stub_backup_all_rc;
}

void photos_free_string(char *value) {
    if (value) free(value);
}

void photos_request_cancel(void) {
    stub_cancelled = 1;
}

void photos_test_set_export_preview_json(const char *json) {
    stub_export_preview_json = json;
}

void photos_test_set_export_original_json(const char *json) {
    stub_export_original_json = json;
}