kava.go

/*
Copyright (c) 2026 tazhate <hate@tazhate.ru>
SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package adapters

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"

	corev1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/resource"

	chainsv1alpha2 "github.com/tazhate/chainplane/api/v1alpha2"
)

// --------------------------------------------------------------------------
// Constants
// --------------------------------------------------------------------------

const (

	// kavaBlockTime is the average Kava block interval used to estimate network tip.
	kavaBlockTime = 6.5 // seconds
)

// --------------------------------------------------------------------------
// Type
// --------------------------------------------------------------------------

type kavaAdapter struct {
	protocolAdapter
}

// --------------------------------------------------------------------------
// Registration
// --------------------------------------------------------------------------

func init() {
	Register(chainsv1alpha2.ChainKava, &kavaAdapter{
		protocolAdapter: protocolAdapter{livenessPort: 26657},
	})
}

// --------------------------------------------------------------------------
// Interface methods
// --------------------------------------------------------------------------

func (a *kavaAdapter) DefaultImage(client string) string {
	return DefaultImageFor(chainsv1alpha2.ChainKava, client)
}

func (a *kavaAdapter) ConfigTemplate(_ chainsv1alpha2.ChainInstanceSpec) (string, string, error) {
	return "app.toml", kavaConfig, nil
}

// ContainerArgs passes --home /data so the node reads from the PVC mount.
func (a *kavaAdapter) ContainerArgs(_ chainsv1alpha2.ChainInstanceSpec) []string {
	return []string{"start", "--home", "/data"}
}

func (a *kavaAdapter) ContainerPorts(_ chainsv1alpha2.ChainInstanceSpec) []corev1.ContainerPort {
	return []corev1.ContainerPort{
		{Name: "rpc", ContainerPort: 26657, Protocol: corev1.ProtocolTCP},
		{Name: "api", ContainerPort: 1317, Protocol: corev1.ProtocolTCP},
		{Name: "p2p", ContainerPort: 26656, Protocol: corev1.ProtocolTCP},
		{Name: "metrics", ContainerPort: 26660, Protocol: corev1.ProtocolTCP},
	}
}

// StartupProbe gives Kava up to 1h (120x30s) to complete state sync.
func (a *kavaAdapter) StartupProbe(_ chainsv1alpha2.ChainInstanceSpec) *corev1.Probe {
	return tcpProbe(26657, 30, 30, 10, 120)
}

// HealthCheck queries CometBFT RPC /status on port 26657.
func (a *kavaAdapter) HealthCheck(ctx context.Context, rpcURL string) (SyncStatus, error) {
	req, err := http.NewRequestWithContext(ctx, http.MethodGet, rpcURL+"/status", nil)
	if err != nil {
		return SyncStatus{}, fmt.Errorf("kava health request: %w", err)
	}
	resp, err := rpcClient.Do(req)
	if err != nil {
		return SyncStatus{}, fmt.Errorf("kava health: %w", err)
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(io.LimitReader(resp.Body, maxResponseBytes))

	var status cosmosStatusResponse
	if err := json.Unmarshal(body, &status); err != nil {
		return SyncStatus{}, fmt.Errorf("kava status parse: %w", err)
	}

	height := parseDecimalInt64(status.Result.SyncInfo.LatestBlockHeight)
	syncing := status.Result.SyncInfo.CatchingUp

	if height == 0 && syncing {
		return syncingPseudo(), nil
	}

	highestBlock := height
	if syncing {
		if blockTime, err := time.Parse(time.RFC3339Nano, status.Result.SyncInfo.LatestBlockTime); err == nil {
			lag := time.Since(blockTime).Seconds()
			if lag > kavaBlockTime {
				highestBlock = height + int64(lag/kavaBlockTime)
			}
		}
		if tip := cosmosNetworkTip(ctx, rpcURL); tip > highestBlock {
			highestBlock = tip
		}
	}

	var progress float64
	if !syncing {
		progress = 100.0
	} else {
		progress = progressFromBlocks(height, highestBlock)
	}

	var peers int32
	if req2, err2 := http.NewRequestWithContext(ctx, http.MethodGet, rpcURL+"/net_info", nil); err2 == nil {
		if resp2, err2 := (&http.Client{Timeout: 5 * time.Second}).Do(req2); err2 == nil {
			defer resp2.Body.Close()
			body2, _ := io.ReadAll(io.LimitReader(resp2.Body, maxResponseBytes))
			var netInfo struct {
				Result struct {
					NPeers string `json:"n_peers"`
				} `json:"result"`
			}
			if json.Unmarshal(body2, &netInfo) == nil {
				peers = int32(parseDecimalInt64(netInfo.Result.NPeers))
			}
		}
	}

	return SyncStatus{
		IsSyncing:    syncing,
		CurrentBlock: height,
		HighestBlock: highestBlock,
		Progress:     progress,
		Peers:        peers,
	}, nil
}

// --------------------------------------------------------------------------
// Config
// --------------------------------------------------------------------------

const kavaConfig = `# Kava node config override
[api]
enable = true
address = "tcp://0.0.0.0:1317"
enabled-unsafe-cors = true

[grpc]
enable = false

[telemetry]
enabled = true
prometheus-retention-time = 60
`

func (a *kavaAdapter) DefaultResources() ResourceDefaults {
	return ResourceDefaults{
		CPURequest:    resource.MustParse("4"),
		MemoryRequest: resource.MustParse("8Gi"),
		Storage:       resource.MustParse("1Ti"),
	}
}

func (a *kavaAdapter) VersionPolicy() ChainVersionPolicy {
	return ChainVersionPolicy{
		Registry:   "docker.io",
		Repository: "kava/kava",
		TagPattern: `^v\d+\.\d+\.\d+-goleveldb$`,
	}
}