#include "ssb.h"

#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <sqlite3.h>
#include <uv.h>

static void _tf_ssb_test_id_conversion()
{
	printf("Testing id conversion.\n");
	uint8_t bin[k_id_bin_len] = { 0 };
	char str[k_id_base64_len] = { 0 };
	const char* k_id = "@bzRTe6hgOII2yZ1keGGoNoQgostjQc830trHc453crY=.ed25519";
	(void)bin;
	(void)str;
	(void)k_id;
	assert(tf_ssb_id_str_to_bin(bin, k_id));
	assert(tf_ssb_id_bin_to_str(str, sizeof(str), bin));
	assert(strcmp(str, k_id) == 0);
}

typedef struct _test_t {
	tf_ssb_t* ssb0;
	tf_ssb_t* ssb1;
	int connection_count0;
	int connection_count1;
} test_t;

static void _ssb_test_connections_changed(tf_ssb_t* ssb, tf_ssb_change_t change, tf_ssb_connection_t* connection, void* user_data)
{
	test_t* test = user_data;

	int count = 0;
	const char** c = tf_ssb_get_connection_ids(ssb);
	for (const char** p = c; *p; p++) {
		count++;
	}
	free(c);

	if (ssb == test->ssb0) {
		printf("callback0 change=%d connection=%p\n", change, connection);
		test->connection_count0 = count;
	} else if (ssb == test->ssb1) {
		printf("callback1 change=%d connection=%p\n", change, connection);
		test->connection_count1 = count;
	}
	printf("conns = %d %d\n", test->connection_count0, test->connection_count1);
}

static void _count_messages_callback(JSValue row, void* user_data)
{
	int* count = user_data;
	++*count;
}

static int _ssb_test_count_messages(tf_ssb_t* ssb)
{
	int count = 0;
	tf_ssb_visit_query(ssb, "SELECT * FROM messages", JS_UNDEFINED, _count_messages_callback, &count);
	return count;
}

static void _tf_ssb_test_ssb()
{
	printf("Testing SSB.\n");
	sqlite3* db0 = NULL;
	sqlite3* db1 = NULL;

	assert(sqlite3_open(":memory:", &db0) == SQLITE_OK);
	assert(sqlite3_open(":memory:", &db1) == SQLITE_OK);

	uv_loop_t loop = { 0 };
	uv_loop_init(&loop);

	tf_ssb_t* ssb0 = tf_ssb_create(&loop, NULL, db0, NULL);
	tf_ssb_t* ssb1 = tf_ssb_create(&loop, NULL, db1, NULL);

	test_t test = {
		.ssb0 = ssb0,
		.ssb1 = ssb1,
	};

	tf_ssb_add_connections_changed_callback(ssb0, _ssb_test_connections_changed, &test);
	tf_ssb_add_connections_changed_callback(ssb1, _ssb_test_connections_changed, &test);

	tf_ssb_generate_keys(ssb0);
	tf_ssb_generate_keys(ssb1);

	char id0[k_id_base64_len] = { 0 };
	char id1[k_id_base64_len] = { 0 };
	bool b = tf_ssb_whoami(ssb0, id0, sizeof(id0));
	(void)b;
	assert(b);
	b = tf_ssb_whoami(ssb0, id0, sizeof(id0));
	assert(b);
	printf("ID %s and %s\n", id0, id1);

	char blob_id[k_id_base64_len] = { 0 };
	const char* k_blob = "Hello, blob!";
	b = tf_ssb_blob_store(ssb0, (const uint8_t*)k_blob, strlen(k_blob), blob_id, sizeof(blob_id));
	assert(b);

	tf_ssb_append_post(ssb0, "Hello, world!");
	tf_ssb_append_post(ssb0, "First post.");

	JSContext* context = tf_ssb_get_context(ssb0);
	JSValue message = JS_NewObject(context);
	JS_SetPropertyStr(context, message, "type", JS_NewString(context, "post"));
	JS_SetPropertyStr(context, message, "text", JS_NewString(context, "First post."));
	JSValue mentions = JS_NewArray(context);
	JSValue mention = JS_NewObject(context);
	JS_SetPropertyStr(context, mention, "link", JS_NewString(context, blob_id));
	JS_SetPropertyUint32(context, mentions, 0, mention);
	JS_SetPropertyStr(context, message, "mentions", mentions);
	tf_ssb_append_message(ssb0, message);
	JS_FreeValue(context, message);

	tf_ssb_server_open(ssb0, 12347);

	uint8_t id0bin[k_id_bin_len];
	tf_ssb_id_str_to_bin(id0bin, id0);
	tf_ssb_connect(ssb1, "127.0.0.1", 12347, id0bin);

	while (test.connection_count0 != 1 ||
		test.connection_count1 != 1) {
		uv_run(&loop, UV_RUN_ONCE);
	}
	tf_ssb_server_close(ssb0);

	while (_ssb_test_count_messages(ssb1) < 3) {
		uv_run(&loop, UV_RUN_ONCE);
	}

	while (!tf_ssb_blob_get(ssb1, blob_id, NULL, NULL)) {
		uv_run(&loop, UV_RUN_ONCE);
	}

	tf_ssb_send_close(ssb1);

	uv_run(&loop, UV_RUN_DEFAULT);

	tf_ssb_destroy(ssb0);
	tf_ssb_destroy(ssb1);

	uv_loop_close(&loop);

	sqlite3_close(db0);
	sqlite3_close(db1);
}

static void _tf_ssb_test_following()
{
	printf("Testing following.\n");
	sqlite3* db0 = NULL;
	assert(sqlite3_open(":memory:", &db0) == SQLITE_OK);

	uv_loop_t loop = { 0 };
	uv_loop_init(&loop);

	tf_ssb_t* ssb0 = tf_ssb_create(&loop, NULL, db0, NULL);
	tf_ssb_generate_keys(ssb0);

	tf_ssb_t* ssb1 = tf_ssb_create(&loop, NULL, db0, NULL);
	tf_ssb_generate_keys(ssb1);

	tf_ssb_t* ssb2 = tf_ssb_create(&loop, NULL, db0, NULL);
	tf_ssb_generate_keys(ssb2);

	char id0[k_id_base64_len] = { 0 };
	char id1[k_id_base64_len] = { 0 };
	char id2[k_id_base64_len] = { 0 };
	tf_ssb_whoami(ssb0, id0, sizeof(id0));
	tf_ssb_whoami(ssb1, id1, sizeof(id1));
	tf_ssb_whoami(ssb2, id2, sizeof(id2));

	JSContext* context = NULL;
	JSValue message;

	#define FOLLOW(ssb, id, follow) \
		context = tf_ssb_get_context(ssb); \
		message = JS_NewObject(context); \
		JS_SetPropertyStr(context, message, "type", JS_NewString(context, "contact")); \
		JS_SetPropertyStr(context, message, "contact", JS_NewString(context, id)); \
		JS_SetPropertyStr(context, message, "following", follow ? JS_TRUE : JS_FALSE); \
		tf_ssb_append_message(ssb, message); \
		JS_FreeValue(context, message); \
		context = NULL

	#define DUMP(id, depth) \
		do { \
			printf("following %d:\n", depth); \
			const char** tf_ssb_get_following_deep(tf_ssb_t* ssb_param, const char** ids, int depth_param); \
			const char** f = tf_ssb_get_following_deep(ssb0, (const char*[]) { id, NULL }, depth); \
			for (const char** p = f; p && *p; p++) { \
				printf("* %s\n", *p); \
			} \
			printf("\n"); \
			free(f); \
		} while (0)

	FOLLOW(ssb0, id1, true);
	FOLLOW(ssb1, id2, true);
	FOLLOW(ssb2, id0, true);
	DUMP(id0, 2);
	DUMP(id1, 2);
	DUMP(id2, 2);
	FOLLOW(ssb0, id1, false);
	//FOLLOW(ssb0, id1, true);
	//FOLLOW(ssb0, id1, true);
	DUMP(id0, 1);
	DUMP(id1, 2);
	//FOLLOW(ssb0, id1, false);
	//DUMP(1);
	//DUMP(1);

	#undef FOLLOW
	#undef DUMP

	uv_run(&loop, UV_RUN_DEFAULT);

	tf_ssb_destroy(ssb0);
	tf_ssb_destroy(ssb1);
	tf_ssb_destroy(ssb2);

	uv_loop_close(&loop);

	sqlite3_close(db0);
}

void tf_ssb_test()
{
	printf("tf_ssb_test() starting.\n");
	_tf_ssb_test_id_conversion();
	_tf_ssb_test_ssb();
	_tf_ssb_test_following();
	printf("tf_ssb_test() completed successfully.\n");
}