Add versioning to files

1 files changed, 96 insertions, 0 deletions

diff --git a/makima/src/db/models.rs b/makima/src/db/models.rs
index 8204b86..617e590 100644
--- a/makima/src/db/models.rs
+++ b/makima/src/db/models.rs
@@ -149,3 +149,99 @@ impl From<File> for FileSummary {
         }
     }
 }
+
+// =============================================================================
+// Version History Types
+// =============================================================================
+
+/// Source of a version change
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema, sqlx::Type)]
+#[sqlx(type_name = "varchar")]
+#[serde(rename_all = "lowercase")]
+pub enum VersionSource {
+    #[sqlx(rename = "user")]
+    User,
+    #[sqlx(rename = "llm")]
+    Llm,
+    #[sqlx(rename = "system")]
+    System,
+}
+
+impl std::fmt::Display for VersionSource {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            VersionSource::User => write!(f, "user"),
+            VersionSource::Llm => write!(f, "llm"),
+            VersionSource::System => write!(f, "system"),
+        }
+    }
+}
+
+impl std::str::FromStr for VersionSource {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.to_lowercase().as_str() {
+            "user" => Ok(VersionSource::User),
+            "llm" => Ok(VersionSource::Llm),
+            "system" => Ok(VersionSource::System),
+            _ => Err(format!("Unknown version source: {}", s)),
+        }
+    }
+}
+
+/// Full version record from the database
+#[derive(Debug, Clone, FromRow, Serialize, ToSchema)]
+#[serde(rename_all = "camelCase")]
+pub struct FileVersion {
+    pub id: Uuid,
+    pub file_id: Uuid,
+    pub version: i32,
+    pub name: String,
+    pub description: Option<String>,
+    pub summary: Option<String>,
+    #[sqlx(json)]
+    pub body: Vec<BodyElement>,
+    pub source: String,
+    pub change_description: Option<String>,
+    pub created_at: DateTime<Utc>,
+}
+
+/// Summary of a version for list views
+#[derive(Debug, Clone, Serialize, ToSchema)]
+#[serde(rename_all = "camelCase")]
+pub struct FileVersionSummary {
+    pub version: i32,
+    pub source: String,
+    pub created_at: DateTime<Utc>,
+    pub change_description: Option<String>,
+}
+
+impl From<FileVersion> for FileVersionSummary {
+    fn from(v: FileVersion) -> Self {
+        Self {
+            version: v.version,
+            source: v.source,
+            created_at: v.created_at,
+            change_description: v.change_description,
+        }
+    }
+}
+
+/// Response for version list endpoint
+#[derive(Debug, Serialize, ToSchema)]
+#[serde(rename_all = "camelCase")]
+pub struct FileVersionListResponse {
+    pub versions: Vec<FileVersionSummary>,
+    pub total: i64,
+}
+
+/// Request to restore a file to a previous version
+#[derive(Debug, Deserialize, ToSchema)]
+#[serde(rename_all = "camelCase")]
+pub struct RestoreVersionRequest {
+    /// The version to restore to
+    pub target_version: i32,
+    /// The current version (for optimistic locking)
+    pub current_version: i32,
+}