feat: Add i18n support, new content block types, course export, and lesson interaction tracking.

services/cms-service/src/exporter.rs

@@ -0,0 +1,65 @@
+use chrono::{DateTime, Utc};
+use common::models::{Course, Lesson, Module};
+use serde::{Deserialize, Serialize};
+use sqlx::PgPool;
+use uuid::Uuid;
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct CourseExport {
+    pub course: Course,
+    pub modules: Vec<ModuleWithLessons>,
+    pub grading_categories: Vec<common::models::GradingCategory>,
+    pub export_version: String,
+    pub exported_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct ModuleWithLessons {
+    pub module: Module,
+    pub lessons: Vec<Lesson>,
+}
+
+pub async fn get_course_data(pool: &PgPool, course_id: Uuid) -> anyhow::Result<CourseExport> {
+    // 1. Fetch Course
+    let course = sqlx::query_as::<_, Course>("SELECT * FROM courses WHERE id = $1")
+        .bind(course_id)
+        .fetch_one(pool)
+        .await?;
+
+    // 2. Fetch Grading Categories
+    let grading_categories = sqlx::query_as::<_, common::models::GradingCategory>(
+        "SELECT * FROM grading_categories WHERE course_id = $1",
+    )
+    .bind(course_id)
+    .fetch_all(pool)
+    .await?;
+
+    // 3. Fetch Modules
+    let modules_raw =
+        sqlx::query_as::<_, Module>("SELECT * FROM modules WHERE course_id = $1 ORDER BY position")
+            .bind(course_id)
+            .fetch_all(pool)
+            .await?;
+
+    let mut modules = Vec::new();
+
+    // 4. Fetch Lessons for each module
+    for module in modules_raw {
+        let lessons = sqlx::query_as::<_, Lesson>(
+            "SELECT * FROM lessons WHERE module_id = $1 ORDER BY position",
+        )
+        .bind(module.id)
+        .fetch_all(pool)
+        .await?;
+
+        modules.push(ModuleWithLessons { module, lessons });
+    }
+
+    Ok(CourseExport {
+        course,
+        modules,
+        grading_categories,
+        export_version: "1.0".to_string(),
+        exported_at: Utc::now(),
+    })
+}