#include "ssb.h"

#include "mem.h"
#include "ssb.db.h"
#include "ssb.js.h"
#include "tests.h"
#include "util.js.h"

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

#include "quickjs-libc.h"

void tf_ssb_test_id_conversion(const tf_test_options_t* options)
{
	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;
	bool b = tf_ssb_id_str_to_bin(bin, k_id);
	(void)b;
	assert(b);
	b = tf_ssb_id_bin_to_str(str, sizeof(str), bin);
	assert(b);
	b = strcmp(str, k_id) == 0;
	assert(b);
}

typedef struct _test_t {
	tf_ssb_t* ssb0;
	tf_ssb_t* ssb1;
	tf_ssb_t* ssb2;
	int connection_count0;
	int connection_count1;
	int connection_count2;
	int broadcast_count0;
	int broadcast_count1;
	int broadcast_count2;
} 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++;
	}
	tf_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;
	}
	else if (ssb == test->ssb2)
	{
		printf("callback2 change=%d connection=%p\n", change, connection);
		test->connection_count2 = count;
	}
	printf("conns = %d %d %d\n", test->connection_count0, test->connection_count1, test->connection_count2);
}

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_db_visit_query(ssb, "SELECT * FROM messages", JS_UNDEFINED, _count_messages_callback, &count);
	return count;
}

static void _message_added(tf_ssb_t* ssb, const char* id, void* user_data)
{
	++*(int*)user_data;
}

static void _ssb_test_idle(uv_idle_t* idle)
{
	tf_ssb_t* ssb = idle->data;
	JSRuntime* runtime = JS_GetRuntime(tf_ssb_get_context(ssb));
	while (JS_IsJobPending(runtime))
	{
		JSContext* context = NULL;
		int r = JS_ExecutePendingJob(runtime, &context);
		JSValue result = JS_GetException(context);
		if (context)
		{
			tf_util_report_error(context, result);
		}
		if (r < 0)
		{
			js_std_dump_error(context);
		}
		else if (r == 0)
		{
			break;
		}
	}
}

void tf_ssb_test_ssb(const tf_test_options_t* options)
{
	printf("Testing SSB.\n");
	sqlite3* db0 = NULL;
	sqlite3* db1 = NULL;

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

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

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

	uv_idle_t idle0 = { .data = ssb0 };
	uv_idle_init(&loop, &idle0);
	uv_idle_start(&idle0, _ssb_test_idle);

	uv_idle_t idle1 = { .data = ssb1 };
	uv_idle_init(&loop, &idle1);
	uv_idle_start(&idle1, _ssb_test_idle);

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

	tf_ssb_add_connections_changed_callback(ssb0, _ssb_test_connections_changed, NULL, &test);
	tf_ssb_add_connections_changed_callback(ssb1, _ssb_test_connections_changed, NULL, &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(ssb1, id1, sizeof(id1));
	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_db_blob_store(ssb0, (const uint8_t*)k_blob, strlen(k_blob), blob_id, sizeof(blob_id), NULL);
	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);

	uint8_t* b0;
	size_t s0 = 0;
	b = tf_ssb_db_blob_get(ssb0, blob_id, &b0, &s0);
	assert(b);
	assert(s0 == strlen(k_blob));
	assert(memcmp(b0, k_blob, strlen(k_blob)) == 0);
	tf_free(b0);
	b = !tf_ssb_db_blob_get(ssb1, blob_id, NULL, NULL);
	assert(b);
	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);

	printf("Waiting for connection.\n");
	while (test.connection_count0 != 1 ||
		test.connection_count1 != 1)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}
	tf_ssb_server_close(ssb0);

	printf("Waiting for messages.\n");
	while (_ssb_test_count_messages(ssb1) < 3)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}

	printf("Waiting for blob.\n");
	while (!tf_ssb_db_blob_get(ssb1, blob_id, NULL, NULL))
	{
		uv_run(&loop, UV_RUN_ONCE);
	}

	uint8_t* b1;
	size_t s1 = 0;
	b = tf_ssb_db_blob_get(ssb1, blob_id, &b1, &s1);
	assert(b);
	printf("s1 = %zd sl = %zd\n", s1, strlen(k_blob));
	assert(s1 == strlen(k_blob));
	assert(memcmp(b1, k_blob, strlen(k_blob)) == 0);
	tf_free(b1);

	printf("Waiting for message to self.\n");
	int count0 = 0;
	int count1 = 0;
	tf_ssb_add_message_added_callback(ssb0, _message_added, NULL, &count0);
	tf_ssb_add_message_added_callback(ssb1, _message_added, NULL, &count1);
	tf_ssb_append_post(ssb0, "Message to self.");
	while (count0 == 0)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}
	tf_ssb_remove_message_added_callback(ssb0, _message_added, &count0);

	printf("Waiting for message from other.\n");
	while (count1 == 0)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}
	tf_ssb_remove_message_added_callback(ssb1, _message_added, &count1);
	printf("done\n");

	tf_ssb_send_close(ssb1);

	uv_close((uv_handle_t*)&idle0, NULL);
	uv_close((uv_handle_t*)&idle1, NULL);

	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 _broadcasts_visit(const char* host, const struct sockaddr_in* addr, tf_ssb_connection_t* tunnel, const uint8_t* pub, void* user_data)
{
	int* count = user_data;
	(*count)++;
}

static void _broadcasts_changed(tf_ssb_t* ssb, void* user_data)
{
	int* count = NULL;
	test_t* test = user_data;
	if (ssb == test->ssb0)
	{
		count = &test->broadcast_count0;
	}
	else if (ssb == test->ssb1)
	{
		count = &test->broadcast_count1;
	}
	else if (ssb == test->ssb2)
	{
		count = &test->broadcast_count2;
	}
	*count = 0;
	tf_ssb_visit_broadcasts(ssb, _broadcasts_visit, count);
	printf("BROADCASTS %d %d %d\n", test->broadcast_count0, test->broadcast_count1, test->broadcast_count2);
}

void tf_ssb_test_rooms(const tf_test_options_t* options)
{
	printf("Testing Rooms.\n");
	sqlite3* db0 = NULL;
	sqlite3* db1 = NULL;
	sqlite3* db2 = NULL;

	int r = sqlite3_open(":memory:", &db0);
	(void)r;
	assert(r == SQLITE_OK);
	r = sqlite3_open(":memory:", &db1);
	assert(r == SQLITE_OK);
	r = sqlite3_open(":memory:", &db2);
	assert(r == SQLITE_OK);

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

	tf_ssb_t* ssb0 = tf_ssb_create(&loop, NULL, db0);
	tf_ssb_register(tf_ssb_get_context(ssb0), ssb0);
	tf_ssb_t* ssb1 = tf_ssb_create(&loop, NULL, db1);
	tf_ssb_register(tf_ssb_get_context(ssb1), ssb1);
	tf_ssb_t* ssb2 = tf_ssb_create(&loop, NULL, db2);
	tf_ssb_register(tf_ssb_get_context(ssb2), ssb2);

	uv_idle_t idle0 = { .data = ssb0 };
	uv_idle_init(&loop, &idle0);
	uv_idle_start(&idle0, _ssb_test_idle);

	uv_idle_t idle1 = { .data = ssb1 };
	uv_idle_init(&loop, &idle1);
	uv_idle_start(&idle1, _ssb_test_idle);

	uv_idle_t idle2 = { .data = ssb2 };
	uv_idle_init(&loop, &idle2);
	uv_idle_start(&idle2, _ssb_test_idle);

	test_t test =
	{
		.ssb0 = ssb0,
		.ssb1 = ssb1,
		.ssb2 = ssb2,
	};

	tf_ssb_add_connections_changed_callback(ssb0, _ssb_test_connections_changed, NULL, &test);
	tf_ssb_add_connections_changed_callback(ssb1, _ssb_test_connections_changed, NULL, &test);
	tf_ssb_add_connections_changed_callback(ssb2, _ssb_test_connections_changed, NULL, &test);

	tf_ssb_add_broadcasts_changed_callback(ssb0, _broadcasts_changed, NULL, &test);
	tf_ssb_add_broadcasts_changed_callback(ssb1, _broadcasts_changed, NULL, &test);
	tf_ssb_add_broadcasts_changed_callback(ssb2, _broadcasts_changed, NULL, &test);

	tf_ssb_generate_keys(ssb0);
	tf_ssb_generate_keys(ssb1);
	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 };
	bool b = tf_ssb_whoami(ssb0, id0, sizeof(id0));
	(void)b;
	assert(b);
	b = tf_ssb_whoami(ssb1, id1, sizeof(id1));
	assert(b);
	b = tf_ssb_whoami(ssb2, id2, sizeof(id2));
	assert(b);
	printf("ID %s, %s, %s\n", id0, id1, id2);

	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);
	tf_ssb_connect(ssb2, "127.0.0.1", 12347, id0bin);

	printf("Waiting for connection.\n");
	while (test.connection_count0 != 2 ||
		test.connection_count1 != 1 ||
		test.connection_count2 != 1)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}
	tf_ssb_server_close(ssb0);

	while (test.broadcast_count1 != 1 ||
		test.broadcast_count2 != 1)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}

	tf_ssb_connection_t* connections[4];
	int count = tf_ssb_get_connections(ssb1, connections, 4);
	(void)count;
	assert(count == 1);

	int32_t tunnel_request_number = tf_ssb_connection_next_request_number(connections[0]);

	JSContext* context = tf_ssb_get_context(ssb1);
	JSValue message = JS_NewObject(context);
	JSValue name = JS_NewArray(context);
	JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "tunnel"));
	JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "connect"));
	JS_SetPropertyStr(context, message, "name", name);
	JSValue args = JS_NewArray(context);
	JSValue arg = JS_NewObject(context);
	JS_SetPropertyStr(context, arg, "portal", JS_NewString(context, id0));
	JS_SetPropertyStr(context, arg, "target", JS_NewString(context, id2));
	JS_SetPropertyUint32(context, args, 0, arg);
	JS_SetPropertyStr(context, message, "args", args);
	JS_SetPropertyStr(context, message, "type", JS_NewString(context, "duplex"));

	JSValue message_json = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
	size_t size;
	const char* raw = JS_ToCStringLen(context, &size, message_json);
	tf_ssb_connection_rpc_send(
		connections[0],
		k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream,
		tunnel_request_number,
		(const uint8_t*)raw,
		size,
		NULL,
		NULL,
		NULL);
	JS_FreeCString(context, raw);
	JS_FreeValue(context, message_json);
	JS_FreeValue(context, message);

	tf_ssb_connection_t* tun0 = tf_ssb_connection_tunnel_create(ssb1, id0, tunnel_request_number, id2);
	printf("tun0 = %p\n", tun0);

	printf("Done.\n");

	while (test.connection_count0 != 2 ||
		test.connection_count1 != 2 ||
		test.connection_count2 != 2)
	{
		uv_run(&loop, UV_RUN_ONCE);
	}

	printf("Done.\n");

	tf_ssb_send_close(ssb1);
	tf_ssb_send_close(ssb2);

	uv_close((uv_handle_t*)&idle0, NULL);
	uv_close((uv_handle_t*)&idle1, NULL);
	uv_close((uv_handle_t*)&idle2, NULL);

	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);
	sqlite3_close(db1);
	sqlite3_close(db2);
}

void tf_ssb_test_following(const tf_test_options_t* options)
{
	printf("Testing following.\n");
	sqlite3* db0 = NULL;
	int r = sqlite3_open(":memory:", &db0);
	(void)r;
	assert(r == SQLITE_OK);

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

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

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

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

#if 1
	/* TODO: This test doesn't actually really test anything anymore. */
	#define DUMP(id, depth)
#else
	#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"); \
			tf_free(f); \
		} \
		while (0)
#endif

	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);
}