Improve multi language support

src/database.rs

@@ -1,4 +1,5 @@
 use std::fs;
+use std::fs::File;
 use std::collections::HashSet;
 use std::fmt;
 
@@ -41,20 +42,22 @@ impl WordDb {
 
         let conn = Connection::open(&db_path).unwrap();
 
-        let mut statement = conn.prepare(
-            "SELECT code, name, major, minor, patch
-            FROM langs"
-        ).unwrap();
-
-        let mut rows = statement.query([]).unwrap();
-
         let mut installed_langs: Vec<Language> = Vec::new();
 
-        while let Some(row) = rows.next().unwrap() {
-            installed_langs.push(Language::from_row(&row));
-        }
+        let statement = conn.prepare(
+            "SELECT code, name, major, minor, patch
+            FROM langs"
+        );
 
-        installed_langs.sort();
+        if let Ok(mut statement) = statement {
+            let mut rows = statement.query([]).unwrap();
+
+            while let Some(row) = rows.next().unwrap() {
+                installed_langs.push(Language::from_row(&row));
+            }
+
+            installed_langs.sort();
+        }
 
         Self {
             db_path,
@@ -144,7 +147,7 @@ impl WordDb {
         )", &lang.code), []).unwrap();
 
         transaction.execute(&format!("
-        CREATE INDEX word_index
+        CREATE INDEX {0}_word_index
         ON {0}_words (word)
         ", &lang.code), []).unwrap();
 
@@ -161,7 +164,7 @@ impl WordDb {
                 (SELECT id FROM {0}_types WHERE name = ?)
         )", &lang.code),
             params![entry.word,
-                    entry.parsed_json.to_string(),
+                    entry.unparsed_json,
                     entry.type_]
         ).unwrap();
     }
@@ -192,7 +195,7 @@ impl WordDb {
         ).unwrap();
 
         for entry in entries.iter() {
-            if let Some(forms) = entry.parsed_json["forms"].as_array() {
+            if let Some(forms) = entry.parse_json()["forms"].as_array() {
                 let mut forms_vec: Vec<Form> = Vec::new();
 
                 for form in forms {
@@ -219,7 +222,10 @@ impl WordDb {
                         let mut senses: Vec<Value> = Vec::new();
 
                         for form in forms {
-                            let mut tags = form.tags.clone();
+                            let mut tags = match &form.tags {
+                                Some(tags) => tags.clone(),
+                                None => Vec::new()
+                            };
                             tags.push(String::from("form-of"));
                             tags.push(String::from("auto-generated"));
 
@@ -230,7 +236,10 @@ impl WordDb {
                                     }
                                 ],
                                 "glosses": [
-                                    form.tags.join(" ")
+                                    match &form.tags {
+                                        Some(tags) => tags.join(" "),
+                                        None => String::from("")
+                                    }
                                 ],
                                 "tags": tags
                             }));
@@ -244,7 +253,7 @@ impl WordDb {
 
                         let new_entry = WiktionaryEntry::new(forms[0].form.clone(),
                                                              entry.type_.clone(),
-                                                             entry_json);
+                                                             entry_json.to_string());
 
                         self.insert_entry(&transaction, lang, &new_entry);
                     }
@@ -293,7 +302,7 @@ impl WordDb {
         println!("Trying to read cached data...");
         let cache_file = format!("{}/{}.json", CACHE_DIR, &lang.name);
 
-        let cached_data = fs::read_to_string(&cache_file);
+        let mut cached_data = File::open(&cache_file);
         let mut request = None;
 
         if let Err(_) = cached_data {
@@ -305,23 +314,20 @@ impl WordDb {
         println!("Cleaning tables...");
         self.clean_tables(lang)?;
 
-        let data;
         if let Some(request) = request {
             // Actually, the request was sent before
             println!("Requesting data...");
-            data = request.await.unwrap().text().await.unwrap();
-            if cfg!(unix) {
-                println!("Caching data...");
-                util::try_create_dir(CACHE_DIR);
-                fs::write(&cache_file, &data).unwrap();
-            }
-        }
-        else {
-            data = cached_data.unwrap();
+            let data = request.await.unwrap().text().await.unwrap();
+
+            println!("Caching data...");
+            util::try_create_dir(CACHE_DIR);
+            fs::write(&cache_file, &data).unwrap();
+
+            cached_data = File::open(&cache_file);
         }
 
         println!("Parsing data...");
-        let entries = WiktionaryEntries::parse_data(data);
+        let entries = WiktionaryEntries::parse_data(cached_data.unwrap());
 
         println!("Inserting types...");
         self.insert_types(lang, &entries);

src/entry.rs

@@ -1,3 +1,5 @@
+use std::fs::File;
+use std::io::{BufRead, BufReader};
 use std::cmp;
 use std::slice::Iter;
 use serde_json::Value;
@@ -7,7 +9,7 @@ use serde::Deserialize;
 pub struct WiktionaryEntry {
     pub word: String,
     pub type_: String,
-    pub parsed_json: Value,
+    pub unparsed_json: String
 }
 
 impl cmp::PartialEq for WiktionaryEntry {
@@ -32,6 +34,8 @@ impl cmp::Ord for WiktionaryEntry {
 
 impl WiktionaryEntry {
     pub fn parse(unparsed_json: &str) -> Self {
+        // We could keep this in memory, but for bigger language databases
+        // it's going to crash the program
         let json: Value = serde_json::from_str(unparsed_json).unwrap();
 
         let word = String::from(json["word"].as_str().unwrap());
@@ -40,27 +44,33 @@ impl WiktionaryEntry {
         Self {
             word,
             type_,
-            parsed_json: json
+            unparsed_json: String::from(unparsed_json)
         }
     }
 
-    pub fn new(word: String, type_: String, parsed_json: Value) -> Self {
+    pub fn new(word: String, type_: String, unparsed_json: String) -> Self {
         Self {
             word,
             type_,
-            parsed_json
+            unparsed_json
         }
     }
+
+    pub fn parse_json(&self) -> Value {
+        serde_json::from_str(&self.unparsed_json).unwrap()
+    }
 }
 
 pub struct WiktionaryEntries(Vec<WiktionaryEntry>);
 
 impl WiktionaryEntries {
-    pub fn parse_data(data: String) -> Self {
+    pub fn parse_data(data: File) -> Self {
+        let reader = BufReader::new(data);
+
         let mut entries: Vec<WiktionaryEntry> = Vec::new();
 
-        for line in data.lines() {
-            entries.push(WiktionaryEntry::parse(line));
+        for line in reader.lines() {
+            entries.push(WiktionaryEntry::parse(&line.unwrap()));
         }
 
         Self(entries)
@@ -74,7 +84,7 @@ impl WiktionaryEntries {
 #[derive(Debug, Deserialize)]
 pub struct Form {
     pub form: String,
-    pub tags: Vec<String>,
+    pub tags: Option<Vec<String>>,
     pub source: Option<String>,
 }
 

static/index.js

@@ -8,23 +8,31 @@ $(document).ready(() => {
         success: data => {
             langs = data;
 
-            $('#langs').html(data.map(lang => `<option value="${lang.code}">${lang.name}</option>`));
+            const selectedLangCode = localStorage.selectedLangCode;
 
+            let options = '';
+
+            langs.forEach(lang => {
+                if(selectedLangCode && lang.code == selectedLangCode) {
+                    options += `<option value="${lang.code}" selected>${lang.name}</option>`;
+                } else {
+                    options += `<option value="${lang.code}">${lang.name}</option>`;
+                }
+            });
+
+            $('#langs').html(options);
             setLang($('#langs').val());
         }
     });
 
-    $('#lang').on('change', e => {
-        console.log(e.target.value);
-
-        let langCode = e.target.value;
-
-        setLang(code);
+    $('#langs').on('change', e => {
+        setLang(e.target.value);
     });
 
     function setLang(code) {
-        let lang = langs.find(lang => lang.code == code);
+        const lang = langs.find(lang => lang.code == code);
 
+        localStorage.selectedLangCode = code;
         selectedLang = lang;
 
         $.ajax({
@@ -64,13 +72,13 @@ $(document).ready(() => {
     searchForm.on('submit', e => {
         e.preventDefault();
 
-        let word = e.target[0].value
+        const word = e.target[0].value
 
         window.location.hash = `#${word}`;
     });
 
     function getWord() {
-        let word = window.location.hash.replace('#', '');
+        const word = window.location.hash.replace('#', '');
 
         if (word) {
             document.title = `Inflective - ${decodeURIComponent(word)}`;

static/schemas/English.json

@@ -0,0 +1 @@
+[]

static/schemas/French.json

@@ -0,0 +1 @@
+[]

static/schemas/German.json

@@ -0,0 +1 @@
+[]

static/schemas/Italian.json

@@ -0,0 +1 @@
+[]

static/schemas/Portuguese.json

@@ -0,0 +1 @@
+[]

static/schemas/Russian.json

@@ -0,0 +1 @@
+[] Italian.json

static/schemas/Spanish.json

@@ -0,0 +1 @@
+[]