feat(contract): implement quest templates

Contract/earn-quest/src/lib.rs

@@ -12,6 +12,7 @@ mod quest;
 mod reputation;
 mod storage;
 mod submission;
+pub mod templates;
 pub mod test;
 pub mod types;
 mod upgrade;

Contract/earn-quest/src/templates.rs

@@ -0,0 +1,69 @@
+use soroban_sdk::{contracttype, Env, Symbol};
+
+/// Categories of predefined quest templates
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum TemplateKind {
+    CodeContribution,
+    ContentCreation,
+    BugReport,
+    Translation,
+    CommunitySupport,
+}
+
+/// A reusable quest template with sensible default parameters
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct QuestTemplate {
+    /// Unique name identifier for the template
+    pub name: Symbol,
+    /// Template category
+    pub kind: TemplateKind,
+    /// Suggested reward amount per participant
+    pub suggested_reward: i128,
+    /// Suggested quest duration in seconds
+    pub suggested_duration: u64,
+    /// Suggested maximum number of participants
+    pub suggested_max_participants: u32,
+}
+
+/// Return the default template configuration for a given kind
+pub fn default_template(env: &Env, kind: TemplateKind) -> QuestTemplate {
+    match kind {
+        TemplateKind::CodeContribution => QuestTemplate {
+            name: Symbol::new(env, "code_contrib"),
+            kind: TemplateKind::CodeContribution,
+            suggested_reward: 100,
+            suggested_duration: 604_800,
+            suggested_max_participants: 10,
+        },
+        TemplateKind::ContentCreation => QuestTemplate {
+            name: Symbol::new(env, "content"),
+            kind: TemplateKind::ContentCreation,
+            suggested_reward: 50,
+            suggested_duration: 259_200,
+            suggested_max_participants: 20,
+        },
+        TemplateKind::BugReport => QuestTemplate {
+            name: Symbol::new(env, "bug_report"),
+            kind: TemplateKind::BugReport,
+            suggested_reward: 200,
+            suggested_duration: 86_400,
+            suggested_max_participants: 5,
+        },
+        TemplateKind::Translation => QuestTemplate {
+            name: Symbol::new(env, "translation"),
+            kind: TemplateKind::Translation,
+            suggested_reward: 30,
+            suggested_duration: 432_000,
+            suggested_max_participants: 50,
+        },
+        TemplateKind::CommunitySupport => QuestTemplate {
+            name: Symbol::new(env, "community"),
+            kind: TemplateKind::CommunitySupport,
+            suggested_reward: 20,
+            suggested_duration: 172_800,
+            suggested_max_participants: 100,
+        },
+    }
+}