routes/(apps)/mobility/api/insert_mobility.ts

@@ -1,55 +1,36 @@
 import { Handlers } from "$fresh/server.ts";
-import { Database } from "@db/sqlite";
+import { db } from "$root/databases/db.ts";
+import { mobility, promotions, students } from "$root/databases/schema.ts";
+import { eq } from "npm:drizzle-orm";
 
 export const handler: Handlers = {
-  // deno-lint-ignore require-await
   async GET() {
     try {
-      console.log("Connecting to mobility database...");
-      const connection = new Database("databases/data/mobility.db", {
-        create: false,
-      });
-      connection.run(
-        "ATTACH DATABASE 'databases/data/students.db' AS students",
-      );
-      console.log("Connected to databases.");
+      const studentRows = await db
+        .select({
+          id: students.userId,
+          firstName: students.firstName,
+          lastName: students.lastName,
+          promotionId: students.promotionId,
+          endyear: promotions.endyear,
+          current: promotions.current,
+        })
+        .from(students)
+        .leftJoin(promotions, eq(students.promotionId, promotions.id));
 
-      const students = connection.prepare(
-        `SELECT 
-          students.userId AS id, 
-          students.firstName, 
-          students.lastName, 
-          students.promotionId AS promotionId, 
-          promotions.name AS promotionName
-         FROM students.students
-         LEFT JOIN students.promotions ON students.promotionId = promotions.id`,
-      ).all();
+      const mobilityRows = await db.select().from(mobility);
 
-      const mobilities = connection.prepare(
-        `SELECT 
-          mobility.id, 
-          mobility.studentId, 
-          mobility.startDate, 
-          mobility.endDate, 
-          mobility.weeksCount, 
-          mobility.destinationCountry, 
-          mobility.destinationName, 
-          mobility.mobilityStatus 
-        FROM mobility`,
-      ).all();
-
-      const promotions = connection.prepare(
-        `SELECT id, name FROM students.promotions`,
-      ).all();
-
-      connection.close();
+      const promotionRows = await db
+        .select({ id: promotions.id, endyear: promotions.endyear, current: promotions.current })
+        .from(promotions);
 
       return new Response(
-        JSON.stringify({ mobilities, students, promotions }),
-        {
-          status: 200,
-          headers: { "Content-Type": "application/json" },
-        },
+        JSON.stringify({
+          mobilities: mobilityRows,
+          students: studentRows,
+          promotions: promotionRows,
+        }),
+        { status: 200, headers: { "Content-Type": "application/json" } },
       );
     } catch (error) {
       console.error("Error fetching mobility data:", error);
@@ -58,8 +39,6 @@ export const handler: Handlers = {
   },
 
   async POST(request) {
-    console.log("API /mobility/api/insert_mobility POST called");
-
     try {
       const body = await request.json();
       const { data } = body;
@@ -67,32 +46,8 @@ export const handler: Handlers = {
       if (!Array.isArray(data)) {
         throw new Error("Invalid request body");
       }
-      console.log("Connecting to mobility database...");
-      const connection = new Database("databases/data/mobility.db", {
-        create: false,
-      });
 
-      console.log("Attaching students database...");
-      connection.run(
-        "ATTACH DATABASE 'databases/data/students.db' AS students",
-      );
-      console.log("Students database attached successfully.");
-
-      const insertQuery = connection.prepare(
-        `INSERT INTO mobility (
-          id, studentId, startDate, endDate, weeksCount, destinationCountry, destinationName, mobilityStatus
-        )
-        VALUES (?, ?, ?, ?, ?, ?, ?, ?)
-        ON CONFLICT(id) DO UPDATE SET
-          startDate = excluded.startDate,
-          endDate = excluded.endDate,
-          weeksCount = excluded.weeksCount,
-          destinationCountry = excluded.destinationCountry,
-          destinationName = excluded.destinationName,
-          mobilityStatus = excluded.mobilityStatus`,
-      );
-
-      for (const mobility of data) {
+      for (const entry of data) {
         const {
           id,
           studentId,
@@ -102,19 +57,16 @@ export const handler: Handlers = {
           destinationCountry,
           destinationName,
           mobilityStatus = "N/A",
-        } = mobility;
+        } = entry;
 
-        console.log("Processing mobility data:", mobility);
+        const studentExists = await db
+          .select({ userId: students.userId })
+          .from(students)
+          .where(eq(students.userId, studentId))
+          .limit(1)
+          .then((rows) => rows.length > 0);
 
-        const studentExists = connection
-          .prepare(
-            `SELECT COUNT(*) AS count FROM students.students WHERE userId = ?`,
-          )
-          .get(studentId);
-
-        console.log(`Student ${studentId} exists:`, studentExists.count > 0);
-
-        if (studentExists.count === 0) {
+        if (!studentExists) {
           console.warn(`Skipping mobility for unknown studentId: ${studentId}`);
           continue;
         }
@@ -123,43 +75,39 @@ export const handler: Handlers = {
         if (startDate && endDate) {
           const start = new Date(startDate);
           const end = new Date(endDate);
-          if (start <= end) {
-            calculatedWeeksCount = Math.ceil(
+          calculatedWeeksCount = start <= end
+            ? Math.ceil(
               (end.getTime() - start.getTime()) / (7 * 24 * 60 * 60 * 1000),
-            );
-          } else {
-            calculatedWeeksCount = null;
-          }
+            )
+            : null;
         }
 
-        console.log("Executing SQL insert/update query for:", {
-          id,
-          studentId,
-          startDate,
-          endDate,
-          calculatedWeeksCount,
-          destinationCountry,
-          destinationName,
-          mobilityStatus,
-        });
-
-        insertQuery.run(
-          id,
-          studentId,
-          startDate,
-          endDate,
-          calculatedWeeksCount,
-          destinationCountry,
-          destinationName,
-          mobilityStatus,
-        );
+        await db
+          .insert(mobility)
+          .values({
+            id,
+            studentId,
+            startDate,
+            endDate,
+            weeksCount: calculatedWeeksCount,
+            destinationCountry,
+            destinationName,
+            mobilityStatus,
+          })
+          .onConflictDoUpdate({
+            target: mobility.id,
+            set: {
+              startDate,
+              endDate,
+              weeksCount: calculatedWeeksCount,
+              destinationCountry,
+              destinationName,
+              mobilityStatus,
+            },
+          });
       }
 
-      connection.close();
-      console.log("Mobility data inserted/updated successfully.");
-      return new Response("Data inserted/updated successfully", {
-        status: 200,
-      });
+      return new Response("Data inserted/updated successfully", { status: 200 });
     } catch (error) {
       console.error("Error inserting mobility data:", error);
       return new Response("Failed to insert/update data", { status: 500 });

routes/(apps)/students/api/students.ts

@@ -1,150 +1,121 @@
 import { FreshContext, Handlers } from "$fresh/server.ts";
-import connect from "$root/databases/connect.ts";
+import { db } from "$root/databases/db.ts";
+import { promotions, students } from "$root/databases/schema.ts";
 import { AuthenticatedState } from "$root/defaults/interfaces.ts";
-import { Database } from "@db/sqlite";
+import { eq, lt } from "npm:drizzle-orm";
 
-/**
- * Gets itself from the database.
- * @param database The database connection
- * @param userId The user ID.
- * @returns Itself from the database.
- */
-function getItself(
-  database: Database,
+async function getItself(
   userId: string,
-): { student: Student | null; promo: Promotion | null } {
-  const studentQuery = "select * from students where userId = ?";
-  const student: Student | undefined = database.prepare(studentQuery).get(
-    userId,
-  );
+): Promise<{ student: Student | null; promo: Promotion | null }> {
+  const student = await db
+    .select()
+    .from(students)
+    .where(eq(students.userId, userId))
+    .limit(1)
+    .then((rows) => rows[0] ?? null);
 
   if (!student) {
     return { student: null, promo: null };
   }
 
-  const promoQuery = "select * from promotions where id = ?";
-  const promo: Promotion | undefined = database.prepare(promoQuery).get(
-    student.promotionId,
-  );
+  const promo = await db
+    .select()
+    .from(promotions)
+    .where(eq(promotions.id, student.promotionId!))
+    .limit(1)
+    .then((rows) => rows[0] ?? null);
 
-  return { student, promo: promo ?? null };
+  return { student, promo };
 }
 
-/**
- * Gets itself from the database.
- * @param database The database connexion
- * @param userId The user ID.
- * @returns Itself from the database.
- */
-function getAll(
-  database: Database,
-): { students: Student[]; promos: Promotion[] } {
-  const studentsQuery = `
-    select userId, firstName, lastName, mail, promotionId
-    from students inner join promotions
-    on students.promotionId = promotions.id
-    where promotions.current < 6`;
-  const students: Student[] = database.prepare(studentsQuery).all();
+async function getAll(): Promise<
+  { students: Student[]; promos: Promotion[] }
+> {
+  const rows = await db
+    .select({
+      userId: students.userId,
+      firstName: students.firstName,
+      lastName: students.lastName,
+      mail: students.mail,
+      promotionId: students.promotionId,
+    })
+    .from(students)
+    .innerJoin(promotions, eq(students.promotionId, promotions.id))
+    .where(lt(promotions.current, 6));
 
-  const promosQuery = "select * from promotions where promotions.current < 6";
-  const promos: Promotion[] | undefined = database.prepare(promosQuery).all();
+  const promos = await db
+    .select()
+    .from(promotions)
+    .where(lt(promotions.current, 6));
 
-  return { students, promos };
+  return { students: rows as Student[], promos };
 }
 
-/**
- * Add users to the database.
- * @param database The database connexion
- * @param students The students to add
- * @param promoId The promotion id.
- */
-function addStudents(database: Database, students: Student[], promoId: string) {
-  const query = `
-    INSERT INTO students 
-    (userId, firstName, lastName, mail, promotionId) 
-    VALUES (?, ?, ?, ?, ?)`;
-
-  const statement = database.prepare(query);
-
-  for (const student of students) {
-    statement.run(
-      student.userId,
-      student.firstName,
-      student.lastName,
-      student.mail,
-      promoId,
-    );
+async function addStudents(
+  studentList: Student[],
+  promoId: number,
+): Promise<void> {
+  for (const student of studentList) {
+    await db
+      .insert(students)
+      .values({
+        userId: student.userId,
+        firstName: student.firstName,
+        lastName: student.lastName,
+        mail: student.mail,
+        promotionId: promoId,
+      })
+      .onConflictDoNothing();
   }
 }
 
 export const handler: Handlers<null, AuthenticatedState> = {
-  /**
-   * The students the user can see.
-   * @param _request The HTTP request.
-   * @param _context The context with authenticated state.
-   * @returns All students our user can see.
-   */
-  // deno-lint-ignore require-await
   async GET(
     _request: Request,
     context: FreshContext<AuthenticatedState>,
   ): Promise<Response> {
-    using connection = connect("students");
-    const database = connection.database;
-
     if (context.state.session.eduPersonPrimaryAffiliation == "student") {
       return new Response(
-        JSON.stringify(getItself(database, context.state.session.uid)),
-        {
-          headers: {
-            "content-type": "application/json",
-          },
-        },
+        JSON.stringify(await getItself(context.state.session.uid)),
+        { headers: { "content-type": "application/json" } },
       );
     }
 
     return new Response(
-      JSON.stringify(getAll(database)),
-      {
-        headers: {
-          "content-type": "application/json",
-        },
-      },
+      JSON.stringify(await getAll()),
+      { headers: { "content-type": "application/json" } },
     );
   },
-  /**
-   * Add students in the database.
-   * @param request The HTTP request.
-   * @param _context The Fresh context.
-   * @returns HTTP 201 on successful insert.
-   */
+
   async POST(
     request: Request,
     _context: FreshContext<AuthenticatedState>,
   ): Promise<Response> {
-    const { students, promo }: { students: Student[]; promo: string } =
-      await request.json();
+    const { students: studentList, promo }: {
+      students: Student[];
+      promo: string;
+    } = await request.json();
 
-    if (!promo || !promo.match(/^\d{4}-\dA$/) || !Array.isArray(students)) {
+    if (!promo || !promo.match(/^\d{4}-\dA$/) || !Array.isArray(studentList)) {
       return new Response(null, { status: 400 });
     }
 
-    using connection = connect("students");
-    const database = connection.database;
-
     const { endyear, current } = promo.match(
       /^(?<endyear>\d{4})-(?<current>\d)A$/,
     )?.groups!;
 
-    database.prepare(
-      "insert or ignore into promotions (endyear, current) values (?, ?)",
-    ).run(endyear, current);
+    await db
+      .insert(promotions)
+      .values({ endyear: Number(endyear), current: Number(current) })
+      .onConflictDoNothing();
 
-    const { id: promoId }: { id: string } = database
-      .prepare("select id from promotions where endyear = ? and current = ?")
-      .get(endyear, current)!;
+    const promo_row = await db
+      .select()
+      .from(promotions)
+      .where(eq(promotions.endyear, Number(endyear)))
+      .then((rows) => rows.find((r) => r.current === Number(current))!);
 
-    addStudents(database, students, promoId);
+    await addStudents(studentList, promo_row.id);
 
     return new Response(null, { status: 201 });
   },