Presto: Crop Receipt

pallets/presto/src/crop_receipt.rs

@@ -28,9 +28,150 @@
 // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 // USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+use crate::{Config, Error, MomentOf};
+
 use codec::{Decode, Encode, MaxEncodedLen};
+use common::{AccountIdOf, Balance, BoundedString};
+use derivative::Derivative;
+use frame_support::ensure;
+use frame_support::traits::Time;
+use sp_runtime::DispatchResult;
+
+#[derive(
+    Debug, Clone, Copy, PartialEq, Eq, Encode, Decode, scale_info::TypeInfo, MaxEncodedLen,
+)]
+pub enum Status {
+    Rating,
+    Decision,
+    Declined,
+    Published,
+}
+
+#[allow(clippy::upper_case_acronyms)]
+#[derive(
+    Debug, Clone, Copy, PartialEq, Eq, Encode, Decode, scale_info::TypeInfo, MaxEncodedLen,
+)]
+pub enum Rating {
+    AAA,
+    AA,
+    A,
+    BBB,
+    BB,
+    B,
+    CCC,
+    CC,
+    C,
+    D,
+    NR,
+}
 
 #[derive(Debug, Clone, PartialEq, Eq, Encode, Decode, scale_info::TypeInfo, MaxEncodedLen)]
-pub struct CropReceipt {
-    // TODO
+#[scale_info(skip_type_params(T))]
+pub struct Score<T: Config> {
+    pub rating: Rating,
+    pub by_auditor: AccountIdOf<T>,
+}
+
+#[derive(Debug, Encode, Decode, scale_info::TypeInfo, MaxEncodedLen, Derivative)]
+#[derivative(Clone, PartialEq, Eq)]
+#[scale_info(skip_type_params(T))]
+pub struct CropReceiptContent<T: Config> {
+    pub json: BoundedString<T::MaxCropReceiptContentSize>,
+}
+
+#[derive(Debug, Encode, Decode, scale_info::TypeInfo, MaxEncodedLen, Derivative)]
+#[derivative(Clone, PartialEq, Eq)]
+#[scale_info(skip_type_params(T))]
+pub struct CropReceipt<T: Config> {
+    pub owner: AccountIdOf<T>,
+    pub time: MomentOf<T>,
+    pub status: Status,
+    pub amount: Balance,
+    pub score: Option<Score<T>>,
+    pub close_initial_period: MomentOf<T>,
+    pub date_of_issue: MomentOf<T>,
+    pub place_of_issue: BoundedString<T::MaxPlaceOfIssueSize>,
+    pub debtor: BoundedString<T::MaxDebtorSize>,
+    pub creditor: BoundedString<T::MaxCreditorSize>,
+    pub perfomance_time: MomentOf<T>,
+}
+
+impl<T: Config> CropReceipt<T> {
+    #[allow(clippy::too_many_arguments)]
+    pub fn new(
+        owner: AccountIdOf<T>,
+        amount: Balance,
+        close_initial_period: MomentOf<T>,
+        date_of_issue: MomentOf<T>,
+        place_of_issue: BoundedString<T::MaxPlaceOfIssueSize>,
+        debtor: BoundedString<T::MaxDebtorSize>,
+        creditor: BoundedString<T::MaxCreditorSize>,
+        perfomance_time: MomentOf<T>,
+    ) -> Self {
+        let time = T::Time::now();
+
+        Self {
+            owner,
+            time,
+            status: Status::Rating,
+            amount,
+            score: None,
+            close_initial_period,
+            date_of_issue,
+            place_of_issue,
+            debtor,
+            creditor,
+            perfomance_time,
+        }
+    }
+
+    pub fn ensure_is_owner(&self, who: &AccountIdOf<T>) -> DispatchResult {
+        ensure!(&self.owner == who, Error::<T>::CallerIsNotCropReceiptOwner);
+        Ok(())
+    }
+
+    pub fn rate(&mut self, rating: Rating, auditor: AccountIdOf<T>) -> DispatchResult {
+        ensure!(
+            self.status == Status::Rating,
+            Error::<T>::CropReceiptAlreadyRated
+        );
+
+        self.score = Some(Score {
+            rating,
+            by_auditor: auditor,
+        });
+        self.status = Status::Decision;
+
+        Ok(())
+    }
+
+    pub fn decline(&mut self) -> DispatchResult {
+        if self.status == Status::Rating {
+            return Err(Error::<T>::CropReceiptWaitingForRate.into());
+        }
+
+        ensure!(
+            self.status == Status::Decision,
+            Error::<T>::CropReceiptAlreadyHasDecision
+        );
+
+        self.status = Status::Declined;
+
+        Ok(())
+    }
+
+    pub fn publish(&mut self) -> DispatchResult {
+        if self.status == Status::Rating {
+            return Err(Error::<T>::CropReceiptWaitingForRate.into());
+        }
+
+        ensure!(
+            self.status == Status::Decision,
+            Error::<T>::CropReceiptAlreadyHasDecision
+        );
+
+        self.status = Status::Published;
+
+        Ok(())
+    }
 }