package pbcommon

import (
	"time"

	"github.com/hashicorp/consul/agent/structs"
	"github.com/hashicorp/consul/proto/pbutil"
)

// IsRead is always true for QueryOption
func (q *QueryOptions) IsRead() bool {
	return true
}

// AllowStaleRead returns whether a stale read should be allowed
func (q *QueryOptions) AllowStaleRead() bool {
	return q.AllowStale
}

func (q *QueryOptions) TokenSecret() string {
	return q.Token
}

func (q *QueryOptions) SetTokenSecret(s string) {
	q.Token = s
}

// SetToken is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetToken(token string) {
	q.Token = token
}

// SetMinQueryIndex is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetMinQueryIndex(minQueryIndex uint64) {
	q.MinQueryIndex = minQueryIndex
}

// SetMaxQueryTime is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetMaxQueryTime(maxQueryTime time.Duration) {
	q.MaxQueryTime = *pbutil.DurationToProto(maxQueryTime)
}

// SetAllowStale is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetAllowStale(allowStale bool) {
	q.AllowStale = allowStale
}

// SetRequireConsistent is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetRequireConsistent(requireConsistent bool) {
	q.RequireConsistent = requireConsistent
}

// SetUseCache is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetUseCache(useCache bool) {
	q.UseCache = useCache
}

// SetMaxStaleDuration is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetMaxStaleDuration(maxStaleDuration time.Duration) {
	q.MaxStaleDuration = *pbutil.DurationToProto(maxStaleDuration)
}

// SetMaxAge is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetMaxAge(maxAge time.Duration) {
	q.MaxAge = *pbutil.DurationToProto(maxAge)
}

// SetMustRevalidate is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetMustRevalidate(mustRevalidate bool) {
	q.MustRevalidate = mustRevalidate
}

// SetStaleIfError is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetStaleIfError(staleIfError time.Duration) {
	q.StaleIfError = *pbutil.DurationToProto(staleIfError)
}

func (q QueryOptions) HasTimedOut(start time.Time, rpcHoldTimeout, maxQueryTime, defaultQueryTime time.Duration) (bool, error) {
	maxTime, err := pbutil.DurationFromProto(&q.MaxQueryTime)
	if err != nil {
		return false, err
	}

	o := structs.QueryOptions{
		MaxQueryTime:  maxTime,
		MinQueryIndex: q.MinQueryIndex,
	}
	return o.HasTimedOut(start, rpcHoldTimeout, maxQueryTime, defaultQueryTime)
}

// SetFilter is needed to implement the structs.QueryOptionsCompat interface
func (q *QueryOptions) SetFilter(filter string) {
	q.Filter = filter
}

// GetMaxQueryTime is required to implement blockingQueryOptions
func (q *QueryOptions) GetMaxQueryTime() (time.Duration, error) {
	if q != nil {
		return pbutil.DurationFromProto(&q.MaxQueryTime)
	}
	return 0, nil
}

// GetMinQueryIndex is required to implement blockingQueryOptions
func (q *QueryOptions) GetMinQueryIndex() uint64 {
	if q != nil {
		return q.MinQueryIndex
	}
	return 0
}

// GetRequireConsistent is required to implement blockingQueryOptions
func (q *QueryOptions) GetRequireConsistent() bool {
	if q != nil {
		return q.RequireConsistent
	}
	return false
}

// GetToken is required to implement blockingQueryOptions
func (q *QueryOptions) GetToken() string {
	if q != nil {
		return q.Token
	}
	return ""
}

// GetAllowStale is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetAllowStale() bool {
	if q != nil {
		return q.AllowStale
	}
	return false
}

// GetFilter is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetFilter() string {
	if q != nil {
		return q.Filter
	}
	return ""
}

// GetMaxAge is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetMaxAge() (time.Duration, error) {
	if q != nil {
		return pbutil.DurationFromProto(&q.MaxAge)
	}
	return 0, nil
}

// GetMaxStaleDuration is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetMaxStaleDuration() (time.Duration, error) {
	if q != nil {
		return pbutil.DurationFromProto(&q.MaxStaleDuration)
	}
	return 0, nil
}

// GetMustRevalidate is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetMustRevalidate() bool {
	if q != nil {
		return q.MustRevalidate
	}
	return false
}

// GetStaleIfError is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetStaleIfError() (time.Duration, error) {
	if q != nil {
		return pbutil.DurationFromProto(&q.StaleIfError)
	}
	return 0, nil
}

// GetUseCache is required to implement structs.QueryOptionsCompat
func (q *QueryOptions) GetUseCache() bool {
	if q != nil {
		return q.UseCache
	}
	return false
}

// SetLastContact is needed to implement the structs.QueryMetaCompat interface
func (q *QueryMeta) SetLastContact(lastContact time.Duration) {
	q.LastContact = *pbutil.DurationToProto(lastContact)
}

// SetKnownLeader is needed to implement the structs.QueryMetaCompat interface
func (q *QueryMeta) SetKnownLeader(knownLeader bool) {
	q.KnownLeader = knownLeader
}

// SetIndex is needed to implement the structs.QueryMetaCompat interface
func (q *QueryMeta) SetIndex(index uint64) {
	q.Index = index
}

// SetConsistencyLevel is needed to implement the structs.QueryMetaCompat interface
func (q *QueryMeta) SetConsistencyLevel(consistencyLevel string) {
	q.ConsistencyLevel = consistencyLevel
}

func (q *QueryMeta) GetBackend() structs.QueryBackend {
	return structs.QueryBackend(0)
}

// SetResultsFilteredByACLs is needed to implement the structs.QueryMetaCompat interface
func (q *QueryMeta) SetResultsFilteredByACLs(v bool) {
	q.ResultsFilteredByACLs = v
}

// GetIndex is required to implement blockingQueryResponseMeta
func (q *QueryMeta) GetIndex() uint64 {
	if q != nil {
		return q.Index
	}
	return 0
}

// GetConsistencyLevel is required to implement structs.QueryMetaCompat
func (q *QueryMeta) GetConsistencyLevel() string {
	if q != nil {
		return q.ConsistencyLevel
	}
	return ""
}

// GetKnownLeader is required to implement structs.QueryMetaCompat
func (q *QueryMeta) GetKnownLeader() bool {
	if q != nil {
		return q.KnownLeader
	}
	return false
}

// GetLastContact is required to implement structs.QueryMetaCompat
func (q *QueryMeta) GetLastContact() (time.Duration, error) {
	if q != nil {
		return pbutil.DurationFromProto(&q.LastContact)
	}
	return 0, nil
}

// GetResultsFilteredByACLs is required to implement structs.QueryMetaCompat
func (q *QueryMeta) GetResultsFilteredByACLs() bool {
	if q != nil {
		return q.ResultsFilteredByACLs
	}
	return false
}

// WriteRequest only applies to writes, always false
//
// IsRead implements structs.RPCInfo
func (w WriteRequest) IsRead() bool {
	return false
}

// SetTokenSecret implements structs.RPCInfo
func (w WriteRequest) TokenSecret() string {
	return w.Token
}

// SetTokenSecret implements structs.RPCInfo
func (w *WriteRequest) SetTokenSecret(s string) {
	w.Token = s
}

// AllowStaleRead returns whether a stale read should be allowed
//
// AllowStaleRead implements structs.RPCInfo
func (w WriteRequest) AllowStaleRead() bool {
	return false
}

// HasTimedOut implements structs.RPCInfo
func (w WriteRequest) HasTimedOut(start time.Time, rpcHoldTimeout, _, _ time.Duration) (bool, error) {
	return time.Since(start) > rpcHoldTimeout, nil
}

// IsRead implements structs.RPCInfo
func (r *ReadRequest) IsRead() bool {
	return true
}

// AllowStaleRead implements structs.RPCInfo
func (r *ReadRequest) AllowStaleRead() bool {
	// TODO(partitions): plumb this?
	return false
}

// TokenSecret implements structs.RPCInfo
func (r *ReadRequest) TokenSecret() string {
	return r.Token
}

// SetTokenSecret implements structs.RPCInfo
func (r *ReadRequest) SetTokenSecret(token string) {
	r.Token = token
}

// HasTimedOut implements structs.RPCInfo
func (r *ReadRequest) HasTimedOut(start time.Time, rpcHoldTimeout, maxQueryTime, defaultQueryTime time.Duration) (bool, error) {
	return time.Since(start) > rpcHoldTimeout, nil
}

// RequestDatacenter implements structs.RPCInfo
func (td TargetDatacenter) RequestDatacenter() string {
	return td.Datacenter
}

func QueryMetaToStructs(s *QueryMeta) (structs.QueryMeta, error) {
	var t structs.QueryMeta
	if s == nil {
		return t, nil
	}
	t.Index = s.Index
	lastContact, err := pbutil.DurationFromProto(&s.LastContact)
	if err != nil {
		return t, err
	}
	t.LastContact = lastContact
	t.KnownLeader = s.KnownLeader
	t.ConsistencyLevel = s.ConsistencyLevel
	return t, nil
}

func NewQueryMetaFromStructs(s structs.QueryMeta) (*QueryMeta, error) {
	var t QueryMeta
	t.Index = s.Index
	t.LastContact = *pbutil.DurationToProto(s.LastContact)
	t.KnownLeader = s.KnownLeader
	t.ConsistencyLevel = s.ConsistencyLevel
	return &t, nil
}

func RaftIndexToStructs(s *RaftIndex) structs.RaftIndex {
	if s == nil {
		return structs.RaftIndex{}
	}
	return structs.RaftIndex{
		CreateIndex: s.CreateIndex,
		ModifyIndex: s.ModifyIndex,
	}
}

func NewRaftIndexFromStructs(s structs.RaftIndex) *RaftIndex {
	return &RaftIndex{
		CreateIndex: s.CreateIndex,
		ModifyIndex: s.ModifyIndex,
	}
}