refactor: rename dc_token to token

src/token.rs

@@ -0,0 +1,56 @@
+use crate::context::Context;
+use crate::dc_tools::*;
+use crate::sql;
+
+// Token namespaces
+#[allow(non_camel_case_types)]
+type dc_tokennamespc_t = usize;
+pub const DC_TOKEN_AUTH: dc_tokennamespc_t = 110;
+pub const DC_TOKEN_INVITENUMBER: dc_tokennamespc_t = 100;
+
+// Functions to read/write token from/to the database. A token is any string associated with a key.
+
+pub fn dc_token_save(context: &Context, namespc: dc_tokennamespc_t, foreign_id: u32) -> String {
+    // foreign_id may be 0
+    let token = dc_create_id();
+    sql::execute(
+        context,
+        &context.sql,
+        "INSERT INTO tokens (namespc, foreign_id, token, timestamp) VALUES (?, ?, ?, ?);",
+        params![namespc as i32, foreign_id as i32, &token, time()],
+    )
+    .ok();
+    token
+}
+
+pub fn dc_token_lookup(
+    context: &Context,
+    namespc: dc_tokennamespc_t,
+    foreign_id: u32,
+) -> Option<String> {
+    context.sql.query_row_col::<_, String>(
+        context,
+        "SELECT token FROM tokens WHERE namespc=? AND foreign_id=?;",
+        params![namespc as i32, foreign_id as i32],
+        0,
+    )
+}
+
+pub fn dc_token_lookup_or_new(
+    context: &Context,
+    namespc: dc_tokennamespc_t,
+    foreign_id: u32,
+) -> String {
+    dc_token_lookup(context, namespc, foreign_id)
+        .unwrap_or_else(|| dc_token_save(context, namespc, foreign_id))
+}
+
+pub fn dc_token_exists(context: &Context, namespc: dc_tokennamespc_t, token: &str) -> bool {
+    context
+        .sql
+        .exists(
+            "SELECT id FROM tokens WHERE namespc=? AND token=?;",
+            params![namespc as i32, token],
+        )
+        .unwrap_or_default()
+}