package hub

// HostReport is the wire contract shared with the hub's ingest
// (felhom.eu TASK-slice3-hub-ingest). Field NAMES must match the hub
// field-for-field. Encoding is ordinary encoding/json (no canonicalization —
// nothing signs this report; canonical JSON is a slice-10 signing concern).
//
// The report IS the heartbeat: one periodic POST /api/v1/host-report, whose
// server-side received_at is the hub's dead-man's-switch liveness signal. There is
// no separate heartbeat endpoint.
type HostReport struct {
	HostID       string `json:"host_id"`     // echoes config.Hub.HostID
	ReportedAt   string `json:"reported_at"` // RFC3339, agent clock
	AgentVersion string `json:"agent_version"`

	Host   HostMetrics `json:"host"`
	Guests []Guest     `json:"guests"`

	// Defined now as the stable contract; emitted EMPTY (non-nil) this slice.
	StorageTargets []StorageTarget `json:"storage_targets"` // slice 5 (storage manifest)
	Backups        []Backup        `json:"backups"`         // slice 6
	RestoreTests   []RestoreTest   `json:"restore_tests"`   // slice 6
	PBSSnapshots   []PBSSnapshot   `json:"pbs_snapshots"`   // slice 6

	Cloudflared Cloudflared  `json:"cloudflared"`
	AuditTail   []AuditEntry `json:"audit_tail"` // populated by a later slice
}

// HostMetrics is the host block, sourced from proxmox NodeStatus.
type HostMetrics struct {
	Node             string   `json:"node"`
	CPUPercent       float64  `json:"cpu_percent"` // 0–100
	MemoryTotalBytes int64    `json:"memory_total_bytes"`
	MemoryUsedBytes  int64    `json:"memory_used_bytes"`
	MemoryPercent    float64  `json:"memory_percent"`
	DiskTotalBytes   int64    `json:"disk_total_bytes"` // host root fs
	DiskUsedBytes    int64    `json:"disk_used_bytes"`
	DiskPercent      float64  `json:"disk_percent"`
	LoadAvg          []string `json:"loadavg"` // array of STRINGS (PVE shape)
	UptimeSeconds    int64    `json:"uptime_seconds"`
}

// Guest is one LXC. The agent reports vmid; the hub derives the guest PK
// "<host_id>/<vmid>" (keeping the id scheme hub-side — locked decision 4).
type Guest struct {
	VMID              int        `json:"vmid"`
	Name              string     `json:"name"`
	Status            string     `json:"status"`             // running | stopped | unknown
	ControllerVersion string     `json:"controller_version"` // "" this slice (slice 8 fills)
	Spec              *GuestSpec `json:"spec,omitempty"`     // omitted when status unknown
}

// GuestSpec is the provisioned guest sizing.
type GuestSpec struct {
	Cores       int   `json:"cores"`
	MemoryBytes int64 `json:"memory_bytes"`
	DiskBytes   int64 `json:"disk_bytes"`
}

// Cloudflared is the tunnel service health (read-only probe this slice).
type Cloudflared struct {
	Status string `json:"status"` // active | inactive | failed | unknown
}

// The following element types are declared now so the empty collections above are
// typed and slices 5/6 only fill them. No wire fields are committed yet.

type StorageTarget struct{} // slice 5: storage manifest target fields TBD
type Backup struct{}        // slice 6: per-target backup status fields TBD
type RestoreTest struct{}   // slice 6: self-restore-test result fields TBD
type PBSSnapshot struct{}   // slice 6: PBS snapshot inventory fields TBD
type AuditEntry struct{}    // audit-log tail entry fields TBD

// ControlEnvelope is the hub's 200 response to a host-report. This slice the agent
// adopts ONLY PollIntervalSeconds; the rest are reserved/forward-compat fields it
// logs at most and never acts on (reconcile, slice 4, consumes them).
type ControlEnvelope struct {
	Status string `json:"status"`
	// PollIntervalSeconds is a pointer so a missing field (keep current interval) is
	// distinguishable from an explicit 0.
	PollIntervalSeconds *int  `json:"poll_interval_seconds"`
	Blocked             bool  `json:"blocked"`            // reserved — ignored (slice 4)
	DesiredGeneration   int64 `json:"desired_generation"` // reserved — ignored (slice 4)
	HasSignedOps        bool  `json:"has_signed_ops"`     // reserved — ignored (slice 4)
}