don't allow bad names in names

bad/create.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+
+# Fetch and merge text and JSON files from URLs
+# Usage: ./create.sh [output_file]
+
+OUTPUT_FILE="${1:-merged_output.txt}"
+TEMP_DIR=$(mktemp -d)
+FINAL_TEMP="$TEMP_DIR/combined.txt"
+
+# Color codes for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# =============================================================================
+# CONFIGURE YOUR URLS AND COMMENTS HERE
+# =============================================================================
+
+URLS_AND_COMMENTS=(
+    "https://raw.githubusercontent.com/dsojevic/profanity-list/refs/heads/main/en.txt"
+    "https://raw.githubusercontent.com/dsojevic/profanity-list/refs/heads/main/emoji.txt"
+    "https://raw.githubusercontent.com/LDNOOBW/List-of-Dirty-Naughty-Obscene-and-Otherwise-Bad-Words/refs/heads/master/de"
+    "https://raw.githubusercontent.com/LDNOOBW/List-of-Dirty-Naughty-Obscene-and-Otherwise-Bad-Words/refs/heads/master/en"
+    "https://raw.githubusercontent.com/zacanger/profane-words/refs/heads/master/words.json"
+)
+
+# =============================================================================
+
+# Check if jq is available for JSON processing
+if ! command -v jq &> /dev/null; then
+    echo -e "${YELLOW}Warning: jq not found. JSON files will be skipped.${NC}"
+    echo -e "${YELLOW}Install jq with: apt-get install jq (Ubuntu/Debian) or brew install jq (macOS)${NC}"
+    HAS_JQ=false
+else
+    HAS_JQ=true
+fi
+
+echo -e "${GREEN}Text/JSON File Merger${NC}"
+echo "Processing $(echo "${URLS_AND_COMMENTS[@]}" | grep -c 'https://' || true) URLs..."
+
+# Process URLs and comments
+for line in "${URLS_AND_COMMENTS[@]}"; do
+    # Handle comments
+    if [[ "$line" =~ ^[[:space:]]*# ]]; then
+        echo "$line" >> "$FINAL_TEMP"
+        continue
+    fi
+
+    # Skip lines that don't look like URLs
+    if [[ ! "$line" =~ ^https?:// ]]; then
+        continue
+    fi
+
+    echo -e "${YELLOW}Fetching: $line${NC}"
+
+    # Create temporary file for this URL
+    URL_TEMP="$TEMP_DIR/url_content.tmp"
+
+    # Fetch the URL
+    if curl -s -f "$line" -o "$URL_TEMP" 2>/dev/null; then
+        echo -e "${GREEN}✓ Successfully fetched${NC}"
+
+        # Check if the content is JSON
+        if [ "$HAS_JQ" = true ] && jq empty "$URL_TEMP" 2>/dev/null; then
+            echo -e "${BLUE}  → Detected JSON format, extracting strings...${NC}"
+
+            # Try to extract strings from JSON array or object
+            # Handle different JSON structures
+            if jq -e 'type == "array"' "$URL_TEMP" >/dev/null 2>&1; then
+                # JSON array - extract all string values
+                jq -r '.[] | select(type == "string")' "$URL_TEMP" >> "$FINAL_TEMP" 2>/dev/null || {
+                    echo -e "${RED}  ✗ Failed to parse JSON array${NC}"
+                    echo "# ERROR: Could not parse JSON from $line" >> "$FINAL_TEMP"
+                }
+            elif jq -e 'type == "object"' "$URL_TEMP" >/dev/null 2>&1; then
+                # JSON object - extract all string values
+                jq -r 'recurse | select(type == "string")' "$URL_TEMP" >> "$FINAL_TEMP" 2>/dev/null || {
+                    echo -e "${RED}  ✗ Failed to parse JSON object${NC}"
+                    echo "# ERROR: Could not parse JSON from $line" >> "$FINAL_TEMP"
+                }
+            else
+                echo -e "${RED}  ✗ Unsupported JSON structure${NC}"
+                echo "# ERROR: Unsupported JSON structure from $line" >> "$FINAL_TEMP"
+            fi
+        else
+            # Regular text file - append as-is
+            echo -e "${BLUE}  → Processing as text file...${NC}"
+            cat "$URL_TEMP" >> "$FINAL_TEMP"
+        fi
+
+        # Clean up URL temp file
+        rm -f "$URL_TEMP"
+    else
+        echo -e "${RED}✗ Failed to fetch: $line${NC}"
+        echo "# ERROR: Could not fetch $line" >> "$FINAL_TEMP"
+    fi
+done
+
+# Check if we have any content
+if [ ! -s "$FINAL_TEMP" ]; then
+    echo -e "${RED}No content to process${NC}"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+echo -e "${YELLOW}Processing content...${NC}"
+
+# Remove duplicates, sort alphabetically, and save to output file
+# Keep comments at the top, sort the rest
+{
+    grep '^#' "$FINAL_TEMP" 2>/dev/null || true
+    grep -v '^#' "$FINAL_TEMP" 2>/dev/null | grep -v '^[[:space:]]*$' | sort -u
+} > "$OUTPUT_FILE"
+
+# Cleanup
+rm -rf "$TEMP_DIR"
+
+# Show results
+line_count=$(wc -l < "$OUTPUT_FILE")
+echo -e "${GREEN}✓ Complete! Merged content saved to: $OUTPUT_FILE${NC}"
+echo -e "${GREEN}Total lines: $line_count${NC}"
+
+# Show a preview of the content
+if [ -s "$OUTPUT_FILE" ]; then
+    echo -e "${YELLOW}Preview (first 10 non-comment lines):${NC}"
+    grep -v '^#' "$OUTPUT_FILE" | head -10
+fi
+

src/game.rs

@@ -135,6 +135,7 @@ async fn set_name(
         Ok(()) => messages.info("set-name-succ"),
         Err(NameUpdateError::TooShort(expected, actual)) => messages.info(format!("err|That's too little!|We need more information about you. Give us at least {expected} characters for you new name!|Received characters: {actual}")),
         Err(NameUpdateError::TooLong(expected, actual)) => messages.info(format!("err|That's too much!|We only live in (20)25, so please use less than {expected} characters for your new name.|Received characters: {actual}")),
+        Err(NameUpdateError::ContainsBadWord) => messages.info(format!("err|Hmmm. I don't like this name.|Please choose a different one!|")),
     };
 
     // Redirect back to the game page

src/main.rs

@@ -3,7 +3,12 @@ use axum::{http::HeaderMap, routing::get, Router};
 use axum_extra::extract::{cookie::Cookie, CookieJar};
 use axum_messages::MessagesManagerLayer;
 use sqlx::{pool::PoolOptions, sqlite::SqliteConnectOptions, SqlitePool};
-use std::{fmt::Display, str::FromStr, sync::Arc};
+use std::{
+    collections::HashSet,
+    fmt::Display,
+    str::FromStr,
+    sync::{Arc, LazyLock},
+};
 use tower_http::services::ServeDir;
 use tower_sessions::{MemoryStore, SessionManagerLayer};
 use uuid::Uuid;
@@ -73,6 +78,36 @@ struct Req {
 pub(crate) enum NameUpdateError {
     TooLong(usize, usize),
     TooShort(usize, usize),
+    ContainsBadWord,
+}
+
+static BAD_WORDS: LazyLock<HashSet<String>> = LazyLock::new(|| {
+    const BAD_WORDS_FILE: &str = include_str!("../bad/merged_output.txt");
+
+    BAD_WORDS_FILE
+        .lines()
+        .map(|line| line.trim())
+        .filter(|line| !line.is_empty() && !line.starts_with('#')) // Skip empty lines and comments
+        .map(|word| {
+            word.to_lowercase()
+                .chars()
+                .filter(|c| c.is_alphabetic())
+                .collect()
+        })
+        .filter(|word: &String| !word.is_empty())
+        .collect()
+});
+
+fn contains_bad_word(text: &str) -> bool {
+    let cleaned_text: String = text
+        .to_lowercase()
+        .chars()
+        .filter(|c| c.is_alphabetic())
+        .collect();
+
+    BAD_WORDS
+        .iter()
+        .any(|bad_word| cleaned_text.contains(bad_word))
 }
 
 impl Backend {
@@ -105,6 +140,9 @@ impl Backend {
         if name.len() < 3 {
             return Err(NameUpdateError::TooShort(3, name.len()));
         }
+        if contains_bad_word(&name) {
+            return Err(NameUpdateError::ContainsBadWord);
+        }
 
         match self {
             Backend::Sqlite(db) => {