package logging

import (
	"io"
	"time"
)

type Interface interface {
	GetCurrentStats(sf SearchFilter) (Statistics, error)
	CountLogsByInterval(sf SearchFilter, interval string) (Histogram, error)
	SearchLogs(sf SearchFilter, from, size int64, order string) (Logs, error)
	ExportLogs(sf SearchFilter, w io.Writer) error
}

// Log search result
type Logs struct {
	Total   int64    `json:"total" description:"total number of matched results"`
	Records []Record `json:"records,omitempty" description:"actual array of results"`
}

type Record struct {
	Log       string `json:"log,omitempty" description:"log message"`
	Time      string `json:"time,omitempty" description:"log timestamp"`
	Namespace string `json:"namespace,omitempty" description:"namespace"`
	Pod       string `json:"pod,omitempty" description:"pod name"`
	Container string `json:"container,omitempty" description:"container name"`
}

// Log statistics result
type Statistics struct {
	Containers int64 `json:"containers" description:"total number of containers"`
	Logs       int64 `json:"logs" description:"total number of logs"`
}

// Log count result by interval
type Histogram struct {
	Total   int64    `json:"total" description:"total number of logs"`
	Buckets []Bucket `json:"histograms" description:"actual array of histogram results"`
}

type Bucket struct {
	Time  int64 `json:"time" description:"timestamp"`
	Count int64 `json:"count" description:"total number of logs at intervals"`
}

// General query conditions
type SearchFilter struct {
	// xxxSearch for literal matching
	// xxxfilter for fuzzy matching

	// To prevent disclosing archived logs of a reopened namespace,
	// NamespaceFilter records the namespace creation time.
	// Any query to this namespace must begin after its creation.
	NamespaceFilter map[string]time.Time
	WorkloadSearch  []string
	WorkloadFilter  []string
	PodSearch       []string
	PodFilter       []string
	ContainerSearch []string
	ContainerFilter []string
	LogSearch       []string

	Starttime time.Time
	Endtime   time.Time
}