package archive

import (
	"fmt"
	"time"
)

const (
	SERVER_VERSION = "archive/3.0"
)

type ArchiveServer struct {
	timezone *time.Location
	cfg      *Config
	startup  time.Time
}

func NewArchiveServer(cfg *Config) (*ArchiveServer, error) {
	tz, err := time.LoadLocation(cfg.Timezone)
	if err != nil {
		return nil, err
	}

	if cfg.LinesPerPage <= 0 {
		return nil, fmt.Errorf("Invalid %d lines per page", cfg.LinesPerPage)
	}

	if len(cfg.Logs) == 0 {
		return nil, fmt.Errorf("No log sources configured")
	}

	for _, ls := range cfg.Logs {
		if len(ls.FileLocation) == 0 {
			return nil, fmt.Errorf(`No file locations for log source "%s"`, ls.Description)
		}
	}

	return &ArchiveServer{
		timezone: tz,
		cfg:      cfg,
		startup:  time.Now(),
	}, nil
}