#include "giteaAPI.h"
#include <curl/curl.h>
#include <curl/easy.h>
#include <json-c/debug.h>
#include <json-c/json_object.h>
#include <string.h>
#include <malloc.h>
#include <json-c/json.h>
#include <assert.h>

#define UNUSED(n) (void)(n)

struct RESPONSE response;

void teaui_gitea_printResponse(){
	fwrite(response.data, sizeof(char), response.size, stdout);
}

int teaui_gitea_parseResponse(char* dest, enum TEAUI_GITEA_JSONPARSER type){
	char* json = malloc(response.size+1);
	memcpy(json, response.data, sizeof(char) * response.size);
	json[response.size-1] = '\0';
	json_object *parent = json_tokener_parse(json);
	json_object *child;

	switch (type) {
		case TEAUI_GITEA_JSONPARSER_TOKEN:
			if(json_object_object_get_ex(parent, "sha1", &child)){
				strcpy(dest, json_object_get_string(child));
				return 0;
			}
			strcpy(dest, json);
			return 1;
			break;
	}
	return 1;
}

size_t _teaui_gitea_saveResponse(char* ptr, size_t size, size_t nmemb, void *userdata){
	UNUSED(userdata);
	char* data = realloc(response.data, response.size + (nmemb*size));
	assert(data != NULL);
	response.data = data;
	memcpy(response.data + response.size, ptr, nmemb*size);
	response.size += size *nmemb;
	return nmemb*size;
}

SESSION teaui_gitea_session(const char *instance){
	curl_global_init(0);
	CURL *handle = curl_easy_init();
	SESSION ret = {.handle=handle};
	ret.instance = malloc(sizeof(char) * (strlen(instance)+1));
	strcpy(ret.instance, instance);
	return ret;
}

void teaui_gitea_cleanup(SESSION s){
	curl_global_cleanup();
	curl_easy_cleanup(s.handle);
}

void teaui_gitea_auth_basic(SESSION s, const char *user, const char *pass){
	curl_easy_setopt(s.handle, CURLOPT_USERNAME, user);
	curl_easy_setopt(s.handle, CURLOPT_PASSWORD, pass);
}

void teaui_gitea_auth_token(SESSION s, const char *token){
	char header[256] = "Authorization: token ";
	strcat(header, token);
	curl_easy_setopt(s.handle , CURLOPT_HEADERDATA, header);
}

void teaui_gitea_auth_generateToken(SESSION s, const char * username, const char *name){
	char endpoint[1024];
	strcpy(endpoint, s.instance);
	strcat(endpoint, "/api/v1/users/");
	strcat(endpoint, username);
	strcat(endpoint, "/tokens");

	char post_data[512] = "name=";
	strcat(post_data, name);

	curl_easy_setopt(s.handle, CURLOPT_URL, endpoint);
	curl_easy_setopt(s.handle, CURLOPT_POSTFIELDS, post_data);
	curl_easy_setopt(s.handle, CURLOPT_WRITEFUNCTION, _teaui_gitea_saveResponse);
	curl_easy_perform(s.handle);
	curl_easy_getinfo(s.handle, CURLINFO_RESPONSE_CODE, response.status);
	return ;
}