// Package governor handle the request of governor data from governor endpoint defined in the api.
package governor

import (
	"context"
	"fmt"

	errs "github.com/wormhole-foundation/wormhole-explorer/api/internal/errors"
	"github.com/wormhole-foundation/wormhole-explorer/api/internal/pagination"
	"github.com/wormhole-foundation/wormhole-explorer/api/response"
	"github.com/wormhole-foundation/wormhole-explorer/common/domain"
	"github.com/wormhole-foundation/wormhole-explorer/common/types"
	"github.com/wormhole-foundation/wormhole/sdk/vaa"
	"go.uber.org/zap"
)

type Service struct {
	repo              *Repository
	supportedChainIDs map[vaa.ChainID]string
	logger            *zap.Logger
}

// NewService create a new governor.Service.
func NewService(dao *Repository, logger *zap.Logger) *Service {
	supportedChainIDs := domain.GetSupportedChainIDs()
	return &Service{repo: dao, supportedChainIDs: supportedChainIDs, logger: logger.With(zap.String("module", "GovernorService"))}
}

// FindGovernorConfig get a list of governor configurations.
func (s *Service) FindGovernorConfig(ctx context.Context, p *pagination.Pagination) (*response.Response[[]*GovConfig], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := NewGovernorQuery().SetPagination(p)
	govConfigs, err := s.repo.FindGovConfigurations(ctx, query)
	res := response.Response[[]*GovConfig]{Data: govConfigs}
	return &res, err
}

// FindGovernorConfigByGuardianAddress get a governor configuration by guardianAddress.
func (s *Service) FindGovernorConfigByGuardianAddress(
	ctx context.Context,
	guardianAddress *types.Address,
) ([]*GovConfig, error) {

	p := pagination.
		Default().
		SetLimit(1)

	query := NewGovernorQuery().
		SetID(guardianAddress).
		SetPagination(p)

	govConfigs, err := s.repo.FindGovConfigurations(ctx, query)
	return govConfigs, err
}

// FindGovernorStatus get a list of governor status.
func (s *Service) FindGovernorStatus(ctx context.Context, p *pagination.Pagination) (*response.Response[[]*GovStatus], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := NewGovernorQuery().SetPagination(p)
	govStatus, err := s.repo.FindGovernorStatus(ctx, query)
	res := response.Response[[]*GovStatus]{Data: govStatus}
	return &res, err
}

// FindGovernorStatusByGuardianAddress get a governor status by guardianAddress.
func (s *Service) FindGovernorStatusByGuardianAddress(
	ctx context.Context,
	guardianAddress *types.Address,
	p *pagination.Pagination,
) (*response.Response[*GovStatus], error) {

	query := NewGovernorQuery().
		SetID(guardianAddress).
		SetPagination(p)

	govStatus, err := s.repo.FindOneGovernorStatus(ctx, query)

	res := response.Response[*GovStatus]{Data: govStatus}
	return &res, err
}

// FindNotionalLimit get a notional limit for each chainID.
func (s *Service) FindNotionalLimit(ctx context.Context, p *pagination.Pagination) (*response.Response[[]*NotionalLimit], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := QueryNotionalLimit().SetPagination(p)
	notionalLimit, err := s.repo.FindNotionalLimit(ctx, query)
	res := response.Response[[]*NotionalLimit]{Data: notionalLimit}
	return &res, err
}

// GetNotionalLimitByChainID get a notional limit by chainID.
func (s *Service) GetNotionalLimitByChainID(ctx context.Context, p *pagination.Pagination, chainID vaa.ChainID) (*response.Response[[]*NotionalLimitDetail], error) {
	query := QueryNotionalLimit().SetPagination(p).SetChain(chainID)
	notionalLimit, err := s.repo.GetNotionalLimitByChainID(ctx, query)
	res := response.Response[[]*NotionalLimitDetail]{Data: notionalLimit}
	return &res, err
}

// GetAvailableNotional get a available notional for each chainID.
func (s *Service) GetAvailableNotional(ctx context.Context, p *pagination.Pagination) (*response.Response[[]*NotionalAvailable], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := QueryNotionalLimit().SetPagination(p)
	notionalAvailability, err := s.repo.GetAvailableNotional(ctx, query)
	res := response.Response[[]*NotionalAvailable]{Data: notionalAvailability}
	return &res, err
}

// GetAvailableNotionalByChainID get a available notional by chainID.
func (s *Service) GetAvailableNotionalByChainID(ctx context.Context, p *pagination.Pagination, chainID vaa.ChainID) (*response.Response[[]*NotionalAvailableDetail], error) {
	// check if chainID is valid
	if _, ok := s.supportedChainIDs[chainID]; !ok {
		return nil, errs.ErrNotFound
	}
	query := QueryNotionalLimit().SetPagination(p).SetChain(chainID)
	notionaLAvailability, err := s.repo.GetAvailableNotionalByChainID(ctx, query)
	res := response.Response[[]*NotionalAvailableDetail]{Data: notionaLAvailability}
	return &res, err
}

// GetMaxNotionalAvailableByChainID get a maximun notional value by chainID.
func (s *Service) GetMaxNotionalAvailableByChainID(ctx context.Context, chainID vaa.ChainID) (*response.Response[*MaxNotionalAvailableRecord], error) {
	// check if chainID is valid
	if _, ok := s.supportedChainIDs[chainID]; !ok {
		return nil, errs.ErrNotFound
	}
	query := QueryNotionalLimit().SetChain(chainID)
	maxNotionaLAvailable, err := s.repo.GetMaxNotionalAvailableByChainID(ctx, query)
	res := response.Response[*MaxNotionalAvailableRecord]{Data: maxNotionaLAvailable}
	return &res, err
}

// GetEnqueueVaas get all the enqueued vaa.
func (s *Service) GetEnqueueVass(ctx context.Context, p *pagination.Pagination) (*response.Response[[]*EnqueuedVaas], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := QueryEnqueuedVaa().SetPagination(p)
	enqueuedVaaResponse, err := s.repo.GetEnqueueVass(ctx, query)
	res := response.Response[[]*EnqueuedVaas]{Data: enqueuedVaaResponse}
	return &res, err
}

// GetEnqueueVassByChainID get enequeued vaa by chainID.
func (s *Service) GetEnqueueVassByChainID(ctx context.Context, p *pagination.Pagination, chainID vaa.ChainID) (*response.Response[[]*EnqueuedVaaDetail], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := QueryEnqueuedVaa().SetPagination(p).SetChain(chainID)
	enqueuedVaaRecord, err := s.repo.GetEnqueueVassByChainID(ctx, query)
	res := response.Response[[]*EnqueuedVaaDetail]{Data: enqueuedVaaRecord}
	return &res, err
}

// GetGovernorLimit get governor limit.
func (s *Service) GetGovernorLimit(ctx context.Context, p *pagination.Pagination) (*response.Response[[]*GovernorLimit], error) {
	if p == nil {
		p = pagination.Default()
	}
	query := NewGovernorQuery().SetPagination(p)
	governorLimit, err := s.repo.GetGovernorLimit(ctx, query)
	res := response.Response[[]*GovernorLimit]{Data: governorLimit}
	return &res, err
}

// GetAvailNotionByChain get governor limit for each chainID.
// Guardian api migration.
func (s *Service) GetAvailNotionByChain(ctx context.Context) ([]*AvailableNotionalByChain, error) {
	return s.repo.GetAvailNotionByChain(ctx)
}

// Get governor token list.
// Guardian api migration.
func (s *Service) GetTokenList(ctx context.Context) ([]*TokenList, error) {
	return s.repo.GetTokenList(ctx)
}

// GetEnqueuedVaas get enqueued vaas.
// Guardian api migration.
func (s *Service) GetEnqueuedVaas(ctx context.Context) ([]*EnqueuedVaaItem, error) {
	entries, err := s.repo.GetEnqueuedVaas(ctx)
	if err != nil {
		return nil, err
	}
	result := make([]*EnqueuedVaaItem, 0)
	existingEnqueuedVaa := map[string]bool{}
	for _, e := range entries {
		// remove duplicates
		key := fmt.Sprintf("%s/%s/%s", e.EmitterChain, e.EmitterAddress, e.Sequence)
		if _, exists := existingEnqueuedVaa[key]; !exists {
			result = append(result, e)
			existingEnqueuedVaa[key] = true
		}
	}
	return result, nil
}

// IsVaaEnqueued check vaa is enqueued.
// Guardian api migration.
func (s *Service) IsVaaEnqueued(ctx context.Context, chainID vaa.ChainID, emitter *types.Address, seq string) (bool, error) {
	isEnqueued, err := s.repo.IsVaaEnqueued(ctx, chainID, emitter, seq)
	return isEnqueued, err
}