34128d8e98
Update go.mod module line, all require/replace directives, and every .go import path from forge.lthn.ai/core/go-blockchain to dappco.re/go/core/blockchain. Add replace directives to bridge dappco.re paths to existing forge.lthn.ai registry during migration. Update CLAUDE.md, README, and docs to reflect the new module path. Co-Authored-By: Virgil <virgil@lethean.io>
46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
// Copyright (c) 2017-2026 Lethean (https://lt.hn)
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//
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// Licensed under the European Union Public Licence (EUPL) version 1.2.
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// SPDX-License-Identifier: EUPL-1.2
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// Package chain stores and indexes the Lethean blockchain by syncing from
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// a C++ daemon via RPC.
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package chain
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import (
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"dappco.re/go/core/blockchain/types"
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coreerr "dappco.re/go/core/log"
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store "dappco.re/go/core/store"
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)
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// Chain manages blockchain storage and indexing.
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type Chain struct {
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store *store.Store
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}
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// New creates a Chain backed by the given store.
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func New(s *store.Store) *Chain {
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return &Chain{store: s}
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}
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// Height returns the number of stored blocks (0 if empty).
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func (c *Chain) Height() (uint64, error) {
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n, err := c.store.Count(groupBlocks)
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if err != nil {
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return 0, coreerr.E("Chain.Height", "chain: height", err)
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}
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return uint64(n), nil
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}
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// TopBlock returns the highest stored block and its metadata.
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// Returns an error if the chain is empty.
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func (c *Chain) TopBlock() (*types.Block, *BlockMeta, error) {
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h, err := c.Height()
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if err != nil {
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return nil, nil, err
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}
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if h == 0 {
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return nil, nil, coreerr.E("Chain.TopBlock", "chain: no blocks stored", nil)
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}
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return c.GetBlockByHeight(h - 1)
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}
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