#![cfg(test)]

pub use super::{data_directory, data_object_storage_registry, data_object_type_registry};
pub use crate::currency::GovernanceCurrency;
use crate::membership;
use crate::membership::members;
use crate::roles::actors;
use crate::traits;
pub use system;

pub use primitives::{Blake2Hasher, H256};
pub use sr_primitives::{
    testing::{Digest, DigestItem, Header, UintAuthorityId},
    traits::{BlakeTwo256, Convert, IdentityLookup, OnFinalize},
    weights::Weight,
    BuildStorage, Perbill,
};

use srml_support::{impl_outer_event, impl_outer_origin, parameter_types};

impl_outer_origin! {
    pub enum Origin for Test {}
}

impl_outer_event! {
    pub enum MetaEvent for Test {
        data_object_type_registry<T>,
        data_directory<T>,
        data_object_storage_registry<T>,
        actors<T>,
        balances<T>,
        members<T>,
    }
}

pub const TEST_FIRST_DATA_OBJECT_TYPE_ID: u64 = 1000;
pub const TEST_FIRST_CONTENT_ID: u64 = 2000;
pub const TEST_FIRST_RELATIONSHIP_ID: u64 = 3000;
pub const TEST_FIRST_METADATA_ID: u64 = 4000;

pub const TEST_MOCK_LIAISON: u64 = 0xd00du64;
pub const TEST_MOCK_EXISTING_CID: u64 = 42;

pub struct MockRoles {}
impl traits::Roles<Test> for MockRoles {
    fn is_role_account(_account_id: &<Test as system::Trait>::AccountId) -> bool {
        false
    }

    fn account_has_role(
        account_id: &<Test as system::Trait>::AccountId,
        _role: actors::Role,
    ) -> bool {
        *account_id == TEST_MOCK_LIAISON
    }

    fn random_account_for_role(
        _role: actors::Role,
    ) -> Result<<Test as system::Trait>::AccountId, &'static str> {
        // We "randomly" select an account Id.
        Ok(TEST_MOCK_LIAISON)
    }
}

pub struct AnyDataObjectTypeIsActive {}
impl<T: data_object_type_registry::Trait> traits::IsActiveDataObjectType<T>
    for AnyDataObjectTypeIsActive
{
    fn is_active_data_object_type(_which: &T::DataObjectTypeId) -> bool {
        true
    }
}

pub struct MockContent {}
impl traits::ContentIdExists<Test> for MockContent {
    fn has_content(which: &<Test as data_directory::Trait>::ContentId) -> bool {
        *which == TEST_MOCK_EXISTING_CID
    }

    fn get_data_object(
        which: &<Test as data_directory::Trait>::ContentId,
    ) -> Result<data_directory::DataObject<Test>, &'static str> {
        match *which {
            TEST_MOCK_EXISTING_CID => Ok(data_directory::DataObject {
                type_id: 1,
                size: 1234,
                added_at: data_directory::BlockAndTime {
                    block: 10,
                    time: 1024,
                },
                owner: 1,
                liaison: TEST_MOCK_LIAISON,
                liaison_judgement: data_directory::LiaisonJudgement::Pending,
                ipfs_content_id: vec![],
            }),
            _ => Err("nope, missing"),
        }
    }
}

// Workaround for https://github.com/rust-lang/rust/issues/26925 . Remove when sorted.
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct Test;
parameter_types! {
    pub const BlockHashCount: u64 = 250;
    pub const MaximumBlockWeight: u32 = 1024;
    pub const MaximumBlockLength: u32 = 2 * 1024;
    pub const AvailableBlockRatio: Perbill = Perbill::one();
    pub const MinimumPeriod: u64 = 5;
}

impl system::Trait for Test {
    type Origin = Origin;
    type Index = u64;
    type BlockNumber = u64;
    type Call = ();
    type Hash = H256;
    type Hashing = BlakeTwo256;
    type AccountId = u64;
    type Lookup = IdentityLookup<Self::AccountId>;
    type Header = Header;
    type Event = MetaEvent;
    type BlockHashCount = BlockHashCount;
    type MaximumBlockWeight = MaximumBlockWeight;
    type MaximumBlockLength = MaximumBlockLength;
    type AvailableBlockRatio = AvailableBlockRatio;
    type Version = ();
}

impl timestamp::Trait for Test {
    type Moment = u64;
    type OnTimestampSet = ();
    type MinimumPeriod = MinimumPeriod;
}

parameter_types! {
    pub const ExistentialDeposit: u32 = 0;
    pub const TransferFee: u32 = 0;
    pub const CreationFee: u32 = 0;
    pub const TransactionBaseFee: u32 = 1;
    pub const TransactionByteFee: u32 = 0;
    pub const InitialMembersBalance: u32 = 2000;
}

impl balances::Trait for Test {
    /// The type for recording an account's balance.
    type Balance = u64;
    /// What to do if an account's free balance gets zeroed.
    type OnFreeBalanceZero = ();
    /// What to do if a new account is created.
    type OnNewAccount = ();
    /// The ubiquitous event type.
    type Event = MetaEvent;

    type DustRemoval = ();
    type TransferPayment = ();
    type ExistentialDeposit = ExistentialDeposit;
    type TransferFee = TransferFee;
    type CreationFee = CreationFee;
}

impl GovernanceCurrency for Test {
    type Currency = balances::Module<Self>;
}

impl data_object_type_registry::Trait for Test {
    type Event = MetaEvent;
    type DataObjectTypeId = u64;
}

impl data_directory::Trait for Test {
    type Event = MetaEvent;
    type ContentId = u64;
    type Roles = MockRoles;
    type IsActiveDataObjectType = AnyDataObjectTypeIsActive;
    type SchemaId = u64;
}

impl data_object_storage_registry::Trait for Test {
    type Event = MetaEvent;
    type DataObjectStorageRelationshipId = u64;
    type Roles = MockRoles;
    type ContentIdExists = MockContent;
}

impl members::Trait for Test {
    type Event = MetaEvent;
    type MemberId = u32;
    type SubscriptionId = u32;
    type PaidTermId = u32;
    type ActorId = u32;
    type InitialMembersBalance = InitialMembersBalance;
}

impl actors::Trait for Test {
    type Event = MetaEvent;
    type OnActorRemoved = ();
}

impl actors::ActorRemoved<Test> for () {
    fn actor_removed(_: &u64) {}
}

pub struct ExtBuilder {
    first_data_object_type_id: u64,
    first_content_id: u64,
    first_relationship_id: u64,
    first_metadata_id: u64,
}

impl Default for ExtBuilder {
    fn default() -> Self {
        Self {
            first_data_object_type_id: 1,
            first_content_id: 2,
            first_relationship_id: 3,
            first_metadata_id: 4,
        }
    }
}

impl ExtBuilder {
    pub fn first_data_object_type_id(mut self, first_data_object_type_id: u64) -> Self {
        self.first_data_object_type_id = first_data_object_type_id;
        self
    }
    pub fn first_content_id(mut self, first_content_id: u64) -> Self {
        self.first_content_id = first_content_id;
        self
    }
    pub fn first_relationship_id(mut self, first_relationship_id: u64) -> Self {
        self.first_relationship_id = first_relationship_id;
        self
    }
    pub fn first_metadata_id(mut self, first_metadata_id: u64) -> Self {
        self.first_metadata_id = first_metadata_id;
        self
    }
    pub fn build(self) -> runtime_io::TestExternalities {
        let mut t = system::GenesisConfig::default()
            .build_storage::<Test>()
            .unwrap();

        data_object_type_registry::GenesisConfig::<Test> {
            first_data_object_type_id: self.first_data_object_type_id,
        }
        .assimilate_storage(&mut t)
        .unwrap();

        data_object_storage_registry::GenesisConfig::<Test> {
            first_relationship_id: self.first_relationship_id,
        }
        .assimilate_storage(&mut t)
        .unwrap();

        membership::members::GenesisConfig::<Test> {
            default_paid_membership_fee: 0,
            members: vec![(1, "alice".into(), "".into(), "".into())],
        }
        .assimilate_storage(&mut t)
        .unwrap();

        t.into()
    }
}

pub type System = system::Module<Test>;
pub type TestDataObjectTypeRegistry = data_object_type_registry::Module<Test>;
pub type TestDataObjectType = data_object_type_registry::DataObjectType;
pub type TestDataDirectory = data_directory::Module<Test>;
// pub type TestDataObject = data_directory::DataObject<Test>;
pub type TestDataObjectStorageRegistry = data_object_storage_registry::Module<Test>;
pub type TestActors = actors::Module<Test>;

pub fn with_default_mock_builder<R, F: FnOnce() -> R>(f: F) -> R {
    ExtBuilder::default()
        .first_data_object_type_id(TEST_FIRST_DATA_OBJECT_TYPE_ID)
        .first_content_id(TEST_FIRST_CONTENT_ID)
        .first_relationship_id(TEST_FIRST_RELATIONSHIP_ID)
        .first_metadata_id(TEST_FIRST_METADATA_ID)
        .build()
        .execute_with(|| {
            let roles: Vec<actors::Role> = vec![actors::Role::StorageProvider];
            assert!(
                TestActors::set_available_roles(system::RawOrigin::Root.into(), roles).is_ok(),
                ""
            );

            f()
        })
}