Complete location as a criteria for search

csvtosql.js

@@ -25,7 +25,7 @@ const db = await getClient();
 const file = fs.readFileSync("./output.csv").toString();
 
 const inFileStream = fs.createReadStream("./output.csv");
-
+await db.query("BEGIN");
 const rl = readline.createInterface({
     input: inFileStream,
     output: null,
@@ -34,9 +34,12 @@ const rl = readline.createInterface({
 
 rl.on('line', async (line) => {
     let splitted = line.split(",")
-    await db.query(`INSERT INTO cities (name, lat, lng, country) VALUES ($1, $2, $3, $4);`, [splitted[0], splitted[1], splitted[2], splitted[3]])
+    console.log(splitted);
+    await db.query(`INSERT INTO cities (name, lat, lng, country) VALUES ($1, $2, $3, $4)`, [splitted[0], splitted[1], splitted[2], splitted[3]])
 });
 
-rl.on('close', () => {
+rl.on('close', async () => {
-    console.log("done");
+    await db.query("COMMIT");
+    process.exit(0)
+
 })

scheme.psql

@@ -40,8 +40,24 @@ CREATE TABLE IF NOT EXISTS messages (
 CREATE UNIQUE INDEX IF NOT EXISTS unique_messages ON messages(sender, recipient);
 
 CREATE TABLE IF NOT EXISTS cities (
-    name VARCHAR(32),
+    name VARCHAR(64),
     lat REAL,
     lng REAL,
-    country VARCHAR(32)
+    country VARCHAR(64)
 );
+
+CREATE EXTENSION IF NOT EXISTS fuzzystrmatch SCHEMA public;
+
+
+
+CREATE OR REPLACE FUNCTION deg2rad(double precision) RETURNS double precision AS 'SELECT $1 * 0.01745329' LANGUAGE SQL IMMUTABLE RETURNS NULL ON NULL INPUT;
+-- lat1, lng1, lat2, lng2, range
+CREATE OR REPLACE FUNCTION check_distance(double precision, double precision, double precision, double precision, double precision) RETURNS BOOLEAN AS '
+SELECT 2 * ASIN(SQRT(
+            POWER(SIN( (deg2rad($3 - $1)) / 2 ), 2) 
+            + COS(deg2rad($1)) 
+            * COS(deg2rad($3)) 
+            * POWER(SIN(deg2rad($4 - $2)/2), 2) 
+            )) 
+* 6371 <= $5
+' LANGUAGE SQL RETURNS NULL ON NULL INPUT;

src/db.js

@@ -61,33 +61,50 @@ const eraseUserMedia = async (roomId) => {
 };
 
 const selectProfilesForUser = async (roomId) => {
-    let myInterest = (await db.query("SELECT interest FROM users WHERE room_id = $1", [roomId])).rows[0].interest;
+    const { myrange, myinterest, mysex, myage, mycity, mycountry } = (await db.query(`SELECT range AS myrange, 
-    let mySex = (await db.query("SELECT sex FROM users WHERE room_id = $1", [roomId])).rows[0].sex;
+                                                                                             interest AS myinterest, 
-    let userAge = (await db.query("SELECT age FROM users WHERE room_id = $1", [roomId])).rows[0].age;
+                                                                                             sex AS mysex, 
-    //Selecting profiles other than user's and with difference in age +-2.
+                                                                                             age AS myage, 
-    let user;
+                                                                                             city AS mycity, 
-    if (myInterest === 'b') // both, no matter what sex
+                                                                                             country AS mycountry 
-        user = (await db.query(`SELECT
+                                                                                      FROM users WHERE room_id = $1`, [roomId])
-                                    room_id, name, age, sex, description, country, city FROM users
-                                WHERE
-                                    age::numeric <@ ANY(ARRAY[numrange($1 - 2, $1 + 2)])
-                                AND room_id != $2
-                                AND (interest = $3 OR interest = 'b')
-                                ORDER BY RANDOM()
-                                LIMIT 1`, [userAge, roomId, mySex])
     ).rows[0];
-    else {
+    const { lat, lng } = (await db.query("SELECT lat, lng FROM cities WHERE name = $1 AND country = $2", [mycity, mycountry])).rows[0];
-        user = (await db.query(`SELECT 
+    //Selecting profiles other than user's and fitting their needs
+    /*
+    2 * ASIN(SQRT(
+                                                                                POWER(SIN( (deg2rad(lat - $6::double precision)) / 2 ), 2) 
+                                                                                + COS(deg2rad(lat)) 
+                                                                                * COS(deg2rad($6::double precision)) 
+                                                                                * POWER(SIN(deg2rad(lng - $7::double precision)/2), 2) 
+                                                                             )) 
+                                                                             * 6371 <= $5::double precision
+    */
+    let user = (await db.query(`SELECT 
                                 room_id, name, age, sex, description, country, city FROM users
                             WHERE
                                 age::numeric <@ ANY(ARRAY[numrange($1 - 2, $1 + 2)])
                             AND room_id != $2
-                                AND sex = $3
+                            AND ${myinterest !== 'b' ? "sex = $3" : "$3 = $3 AND $4 = $4 AND $5 = $5 AND $6 = $6 AND $7 = $7"}
+                            AND ${myrange !== 0 ?
+                                `city = ANY(ARRAY(SELECT name 
+                                                    FROM cities 
+                                                    WHERE name = ANY(ARRAY(SELECT name 
+                                                                            FROM cities 
+                                                                            WHERE 
+                                                                            check_distance($6::double precision, $7::double precision, lat, lng, $5::double precision)
+                                                                    
+                                                    ))
+                                ))`
+                                :
+                                `check_distance($6::double precision, $7::double precision, (SELECT lat FROM cities WHERE name = city AND cities.country = country), (SELECT lng FROM cities WHERE name = city AND cities.country = country), range)`
+                            }
+                            AND (range >= $5::double precision AND range != 0)
                             AND (interest = $4 OR interest = 'b')
                             ORDER BY RANDOM()
-                                LIMIT 1`, [userAge, roomId, myInterest, mySex])
+                            LIMIT 1`, [myage, roomId, myinterest, mysex, myrange, lat, lng])
     ).rows[0];
-    }
+
     if (!user) return null;
     let media = await getUserProfilePictures(user.room_id);
 
@@ -174,6 +191,43 @@ const getUserLanguage = async (roomId) => {
     return (await db.query("SELECT language FROM users WHERE room_id = $1", [roomId])).rows[0].language;
 }
 
+const checkCountry = async (name) => {
+    let res = (await db.query(`SELECT country AS name, levenshtein(country, $1) AS similarity
+                               FROM cities
+                               ORDER BY similarity ASC
+                               LIMIT 3`, [name])
+    ).rows;
+
+    if (res[0].similarity == 0) { // 'similarity' is actually inversed. The less 'similarity', the more it similar. 0 means the same
+        return {
+            exists: true
+        };
+    }
+    return {
+        exists: false,
+        variants: res
+    };
+}
+
+const checkCity = async (name) => {
+    let res = (await db.query(`SELECT name, country, levenshtein(name, $1) AS similarity
+                               FROM cities
+                               ORDER BY similarity ASC
+                               LIMIT 5`, [name])
+    ).rows;
+
+    if (res[0].similarity == 0) {
+        return {
+            exists: true,
+            country: res[0].country
+        }
+    }
+    return {
+        exists: false,
+        variants: res
+    }
+}
+
 export {
     eraseUser,
     appendUserPictures,
@@ -196,5 +250,7 @@ export {
     getUnreadMessages,
     markMessageAsRead,
     setUserLanguage,
-    getUserLanguage
+    getUserLanguage,
+    checkCountry,
+    checkCity
 };

src/index.js

@@ -32,7 +32,9 @@ import {
     setUserState,
     uploadMediaAsMessage,
     setUserLanguage,
-    getUserLanguage
+    getUserLanguage,
+    checkCountry,
+    checkCity
 } from './db.js';
 
 import { processRequest, showRandomProfileToUser, showNewLikes } from "./interactions.js";
@@ -84,15 +86,41 @@ client.on("room.message", async (roomId, event) => {
 
                 break;
             case "country":
+                let checkResultCountry = await checkCountry(answer);
+                if (!checkResultCountry.exists) {
+                    console.log(checkResultCountry.variants)
+                    await client.sendText(roomId, i18n.t(
+                        ["errors", "wrongcountry"],
+                        {
+                            first: checkResultCountry.variants[0].name,
+                            second: checkResultCountry.variants[1].name,
+                            third: checkResultCountry.variants[2].name
+                        }
+                    ));
+                    return;
+                }
                 await processRequest(client, roomId, current_action, answer, 'city');
                 break;
             case "city":
+                let checkResultCity = await checkCity(answer); 
+                if (!checkResultCity.exists) {
+                    await client.sendText(roomId, i18n.t(
+                        ["errors", "wrongcity"],
+                        {
+                            first: checkResultCity.variants[0].name,
+                            second: checkResultCity.variants[1].name,
+                            third: checkResultCity.variants[2].name,
+                            fourth: checkResultCity.variants[3].name,
+                            fifth: checkResultCity.variants[4].name,
+                        }
+                    ));
+                    return;
+                }
                 await processRequest(client, roomId, current_action, answer, 'range');
                 break;
             case "range":
                 answer = parseInt(answer.split(" ")[0]);
-                console.log(answer)
+                if (!answer && answer != 0) {
-                if (!answer) {
                     await client.sendText(roomId, i18n.t(["setup", "range"]));
                     return;
                 }
@@ -187,7 +215,7 @@ client.on("room.message", async (roomId, event) => {
 
                     return;
                 } else if (answer == '🏠️' || answer == '4') {
-                    await client.sendText(roomId, messages.general.menu);
+                    await client.sendText(roomId, i18n.t(["general", "menu"]));
                     await setUserState(roomId, 'menu');
                     return;
                 }

src/interactions.js

@@ -87,8 +87,7 @@ ${chosenProfile.description}`;
         }
     }
 
-
+    await client.sendText(roomId, i18n.t(["general", "rate"]));
-    await client.sendText(roomId, messages.general.rate);
 };
 
 const showProfileToUser = async (client, roomId, profileId) => {

translations/en.json

@@ -37,6 +37,8 @@
         "didntunderstand": "I cannot understand your answer. Please, read my question again and answer!",
         "notimplemented": "This feature is not yet implemented! Please, keep track of my updates at https://git.foxarmy.org/leca/heart2heart. Bother your admins to update, if released! ;)",
         "noprofiles": "There are no profiles left for you! I'm sorry. Please, come back later!",
-        "alreadymessaged": "You have already messaged that person. Your message was not sent!"
+        "alreadymessaged": "You have already messaged that person. Your message was not sent!",
+        "wrongcountry": "There is no such country. Perhaps, you meant %{first}, %{second} or %{third}?",
+        "wrongcity": "There is no such city. Perhaps, you meant %{first}, %{second}, %{third}, %{fourth} or %{fifth}?"
     }
 }

translations/ru.json

@@ -37,7 +37,8 @@
         "didntunderstand": "Я не понимаю ваш ответ. Пожалуйста, перечитайте моё прошлое сообщение и попробуйте снова!",
         "notimplemented": "Эта возможность ещё не добавлена! Пожалуйста, следите за обновлениями на моём git'е: https://git.foxarmy.org/leca/heart2heart. Доставайте своих админов, чтобы обновлялись, когда новая версия выходит ;)",
         "noprofiles": "Не могу найти профили, которые подходят вашим критериям! Извините. Попробуйте позже!",
-        "alreadymessaged": "Вы уже отправляли сообщение этому человеку. Ваше сообщение не было отправлено!"
+        "alreadymessaged": "Вы уже отправляли сообщение этому человеку. Ваше сообщение не было отправлено!",
-
+        "wrongcountry": "Не знаю такой страны. Возможно, вы имели в виду %{first}, %{second} или %{third}?",
+        "wrongcity": "Не знаю такого города. Возможно, вы имели в виду %{first}, %{second}, %{third}, %{fourth} или %{fifth}?"
     }
 }