añade función de añadir poster a la base de datos

src/lib/db/db.js

@@ -22,3 +22,19 @@ const createPostersTable = db.prepare(`CREATE TABLE IF NOT EXISTS Posters (
 
 createUserTable.run();
 createPostersTable.run();
+
+/**
+* @typedef {Object} User
+* @property {string} [email]
+* @property {string} [password]
+* @property {boolean} [isAdmin]
+*/
+
+/**
+* @typedef {Object} Poster
+* @property {number} [id]
+* @property {Blob} [image]
+* @property {string} [template]
+* @property {string} [name]
+* @property {string} [content] Stringified contents
+*/

src/lib/db/utils.js

@@ -50,3 +50,34 @@ export const delUserFromDB = (email) => {
   return { error: `Could not remove user '${email}' from DB` }
 }
 
+/**
+* @function addPosterToDB
+* @param {Blob} image
+* @param {string} template
+* @param {string} name
+* @param {string} content
+* @returns {DBActionResult} return
+*/
+export const addPosterToDB = (image, template, name = "", content) => {
+  console.log(`You passed this paramas:\n image: ${image}\n template: ${template}\n name: ${name}\n content: ${content}`);
+
+  const id = crypto.randomUUID(); // Create random ID for Poster
+
+  if (!image || !template || !content) { // Return error if mandatory info is missing
+    return {
+      error: "Image, template or content missing"
+    }
+  }
+
+  const addPoster = db.prepare(`INSERT INTO Posters(id,image,template,name,content) VALUES (?,?,?,?,?);`);
+  const result = addPoster.run(id, image, template, name, content);
+
+  if (result.changes === 1) {
+    return {
+      success: `Poster added to DB with id ${id}`
+    }
+  }
+  return { // Default return just in case
+    error: `Could not save poster '${id}' to DB. Something went wrong`
+  }
+}