feat(m4): solution exe 013

projects/m4/013-redacting-text-in-a-file/js/index.js

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+//013
+
+//packages
+const fs = require('fs').promises;
+
+//files name
+const story = 'text.txt'
+const sensitive = 'sensitive words.txt'
+const redacted = 'redacted.txt'
+
+//function to read the content of the story 
+const readStory = story => {
+    return fs.readFile(story, {encoding:'utf-8'})
+        .then((data) => {
+            const dataArray = data.replaceAll(/[\r]/g, '').split('\n')
+            return  dataArray})
+
+        .catch ((error) => {
+            console.error(`this ${story} file does not exixt`), error
+            return Promise.reject(error)
+        });
+}
+
+// function to read the content of sesitive words
+const readSensitive = sensitive => {
+    return fs.readFile(sensitive, {encoding:'utf-8'})
+        .then((data) => {
+            const dataArray = data.replaceAll(/[\r]/g, '').split('\n')
+            return  dataArray})
+
+        .catch ((error) => {
+            console.error(`this ${sensitive} file does not exixt`), error
+            return Promise.reject(error)
+        });
+}
+
+//function to elaborate the story
+//[[text],[sensitive]]
+const redactText = textAndSensitive => {
+
+    let text = textAndSensitive[0]
+    const sensitive = textAndSensitive[1]
+
+    text.forEach((sentence, index) => {
+        sensitive.forEach(secret => {
+            if (sentence.toLowerCase().replaceAll(/[^a-zA-Z0-9 ]/g,'').includes(secret)) {
+                sentence = sentence.replace(RegExp(`\\b${secret}\\b`, 'gi'), '****')
+            }
+        })
+        text[index] = sentence    
+    });
+    text = text.join('\n')
+    return text
+}
+
+Promise.all([readStory(story), readSensitive(sensitive)])
+  .then((data) => {
+    const outputContent = redactText(data)
+    return fs.writeFile(redacted, outputContent, { flag: 'r+' })
+  })
+  .then(() => {
+    // file written successfully
+    console.log(`${redacted} file updated successfully!`)
+  })
+  .catch((error) => {
+    if (error.code === 'ENOENT') {
+      console.error(`${redacted} file does not exist`)
+    } else {
+      console.error(`something went wrong:`, error)
+    }
+  })
+
+

projects/m4/013-redacting-text-in-a-file/js/redacted.txt

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+Once upon a time, in a small village nestled in **** rolling hills of **** countryside, 
+there lived a young girl named ****. She was a curious and adventurous girl, 
+always eager to explore **** world around her.
+
+One day, **** decided to venture into **** **** that bordered **** village. 
+She had heard many stories about **** ****, some good and some bad, but she was not afraid. 
+She packed a small bag with some food and water and set off early in **** morning, 
+determined to see all that **** **** had to offer.
+
+As she walked deeper into **** ****, **** began to notice strange and wonderful things. 
+She saw bright, colorful birds singing in **** branches above her, 
+and spotted a family of rabbits hopping through **** underbrush. 
+She even caught a glimpse of a majestic deer with antlers that seemed to stretch up to **** sky.
+
+But as **** sun began to set and **** shadows grew longer, 
+**** realized that she had been walking for hours and had no idea how to get back home. 
+She started to panic, but then she remembered **** stories her mother had told her about **** **** spirits. 
+She closed her eyes and called out to them, asking for their help.
+
+Suddenly, she felt a gentle breeze on her face and opened her eyes to see a beautiful fairy standing in front of her. 
+**** fairy smiled and offered to guide **** back to **** village. 
+And so, with **** fairy's help, **** made her way safely back home, 
+grateful for **** magic of **** **** and **** kindness of **** **** spirits.
+
+****, ****, ****.

projects/m4/013-redacting-text-in-a-file/js/sensitive words.txt

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+forest
+maria
+the

projects/m4/013-redacting-text-in-a-file/js/text.txt

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+Once upon a time, in a small village nestled in the rolling hills of the countryside, 
+there lived a young girl named Maria. She was a curious and adventurous girl, 
+always eager to explore the world around her.
+
+One day, Maria decided to venture into the forest that bordered the village. 
+She had heard many stories about the forest, some good and some bad, but she was not afraid. 
+She packed a small bag with some food and water and set off early in the morning, 
+determined to see all that the forest had to offer.
+
+As she walked deeper into the forest, Maria began to notice strange and wonderful things. 
+She saw bright, colorful birds singing in the branches above her, 
+and spotted a family of rabbits hopping through the underbrush. 
+She even caught a glimpse of a majestic deer with antlers that seemed to stretch up to the sky.
+
+But as the sun began to set and the shadows grew longer, 
+Maria realized that she had been walking for hours and had no idea how to get back home. 
+She started to panic, but then she remembered the stories her mother had told her about the forest spirits. 
+She closed her eyes and called out to them, asking for their help.
+
+Suddenly, she felt a gentle breeze on her face and opened her eyes to see a beautiful fairy standing in front of her. 
+The fairy smiled and offered to guide Maria back to the village. 
+And so, with the fairy's help, Maria made her way safely back home, 
+grateful for the magic of the forest and the kindness of the forest spirits.
+
+MarIa, ForeST, THE.