// Package cluster contains information about the cluster
package cluster

import (
	"io/fs"

	"darvaza.org/resolver"
	"darvaza.org/slog"
	"github.com/gofrs/uuid/v5"
)

var (
	_ MachineIterator = (*Cluster)(nil)
	_ ZoneIterator    = (*Cluster)(nil)
)

// revive:disable:line-length-limit

// Cluster represents all zones in a cluster
type Cluster struct {
	dir      fs.FS
	log      slog.Logger
	resolver resolver.Resolver

	BaseDir string `json:"dir,omitempty"    yaml:"dir,omitempty"`
	Name    string `json:"name,omitempty"   yaml:"name,omitempty"`
	Domain  string `json:"domain,omitempty" yaml:"domain,omitempty"`

	CephFSID uuid.UUID `json:"ceph_fsid,omitempty" yaml:"ceph_fsid,omitempty"`
	Regions  []Region  `json:",omitempty"          yaml:",omitempty"`
	Zones    []*Zone   `json:",omitempty"          yaml:",omitempty"`
}

// revive:enable:line-length-limit

// ForEachMachine calls a function for each Machine in the cluster
// until instructed to terminate the loop
func (m *Cluster) ForEachMachine(fn func(*Machine) bool) {
	m.ForEachZone(func(z *Zone) bool {
		var term bool

		z.ForEachMachine(func(p *Machine) bool {
			term = fn(p)
			return term
		})

		return term
	})
}

// ForEachZone calls a function for each Zone in the cluster
// until instructed to terminate the loop
func (m *Cluster) ForEachZone(fn func(*Zone) bool) {
	for _, p := range m.Zones {
		if fn(p) {
			// terminate
			return
		}
	}
}

// GetMachineByName looks for a machine with the specified
// name on any zone
func (m *Cluster) GetMachineByName(name string) (*Machine, bool) {
	var out *Machine

	if name != "" {
		m.ForEachMachine(func(p *Machine) bool {
			if p.Name == name {
				out = p
			}

			return out != nil
		})
	}

	return out, out != nil
}