#!/bin/sh

#######################################
# generate_mp3.sh - Generates MP3 files from text files in German and Spanish
#
# Author: Michael Haider
# Created on: 26.01.2024
# Description: This script creates MP3 files from text files in German and Spanish
#              using gtts-cli (Google Text-to-Speech).
#######################################

# Export the path to the programs
export PATH=$PATH:/data/data/com.termux/files/usr/bin

# Array with the desired languages in order
lang_order=("es" "de" "es-l")
category_order=("date" "time")

# Directories
txt_dir="/data/scripts/.text"
mp3_dir="/data/scripts/.mp3"

# remove old files
rm -f "$txt_dir"/*complete.txt

# Function to create MP3 files
create_mp3_files() {

  for file in "$txt_dir"/*.txt; do
    text=$(cat "$file") # Read the content of the file
    base_filename=$(basename "$file" .txt)  # File name without path and extension

    if [[ $file == *de.txt ]]; then
      # If it's a German file, create a German MP3
      /data/data/com.termux/files/usr/bin/gtts-cli -l de "$text" --output "$mp3_dir/$base_filename.mp3"
      echo "$text" >> "$txt_dir/de_complete.txt"
      echo "German MP3 file created: $base_filename.mp3"
    elif [[ $file != *de.txt ]]; then
      # If it's a Spanish file, create a Spanish MP3 in slow mode
      /data/data/com.termux/files/usr/bin/gtts-cli -l es -s "$text" --output "$mp3_dir/$base_filename.mp3"
      echo "$text" >> "$txt_dir/es_complete.txt"
      echo "Spanish MP3 file created: $base_filename.mp3"
    else
      echo "File $file was not processed"
    fi
  done
}

# Call the function to create the MP3 files
create_mp3_files

# Set media volume
cmd media_session volume --set 10 --stream 9

# Loop through categories and languages
for category in "${category_order[@]}"; do
  echo "All categories: ${category_order[@]}"
  echo "Actual category: $category"

  for language in "${lang_order[@]}"; do
    echo "All languages: ${lang_order[@]}"
    echo "Actual language: $language"
    echo "Actual file: ${category}_${language}.mp3"

    # Check if the language indicates slower playback
    if [[ $language == *"-l"* ]]; then
      # If "-l" is present in lang_order, play the file at half speed
      lang_without_l="${language/-l/}"  # Remove "-l" from the language
      mpv --speed=0.8 "$mp3_dir/${category}_${lang_without_l}.mp3"
    else
      # Otherwise, play the file at normal speed
      mpv "$mp3_dir/${category}_${language}.mp3"
    fi
  done
done