From 75da135755a01c5b6f7dbd3528fcdb6e9d425aca Mon Sep 17 00:00:00 2001
From: Ethan Buchman <ethan@coinculture.info>
Date: Mon, 13 Mar 2017 20:20:07 -0400
Subject: [PATCH] basecoin unsafe_reset_all

---
 cmd/basecoin/main.go        |   1 +
 cmd/commands/reset.go       |  52 +++++++++++++++++
 docs/guide/basecoin-tool.md | 110 ++++++++++++++++++++++++++++++++++++
 3 files changed, 163 insertions(+)
 create mode 100644 cmd/commands/reset.go
 create mode 100644 docs/guide/basecoin-tool.md

diff --git a/cmd/basecoin/main.go b/cmd/basecoin/main.go
index cab2213684..d452aeb6f8 100644
--- a/cmd/basecoin/main.go
+++ b/cmd/basecoin/main.go
@@ -22,6 +22,7 @@ func main() {
 		commands.VerifyCmd,
 		commands.BlockCmd,
 		commands.AccountCmd,
+		commands.UnsafeResetAllCmd,
 	}
 	app.Run(os.Args)
 }
diff --git a/cmd/commands/reset.go b/cmd/commands/reset.go
new file mode 100644
index 0000000000..693e6107ee
--- /dev/null
+++ b/cmd/commands/reset.go
@@ -0,0 +1,52 @@
+package commands
+
+import (
+	"os"
+	"path"
+
+	"github.com/urfave/cli"
+
+	tmcfg "github.com/tendermint/tendermint/config/tendermint"
+	types "github.com/tendermint/tendermint/types"
+)
+
+var UnsafeResetAllCmd = cli.Command{
+	Name:      "unsafe_reset_all",
+	Usage:     "Reset all blockchain data",
+	ArgsUsage: "",
+	Action: func(c *cli.Context) error {
+		return cmdUnsafeResetAll(c)
+	},
+}
+
+func cmdUnsafeResetAll(c *cli.Context) error {
+	basecoinDir := BasecoinRoot("")
+	tmDir := path.Join(basecoinDir, "tendermint")
+	tmConfig := tmcfg.GetConfig(tmDir)
+
+	// Get and Reset PrivValidator
+	var privValidator *types.PrivValidator
+	privValidatorFile := tmConfig.GetString("priv_validator_file")
+	if _, err := os.Stat(privValidatorFile); err == nil {
+		privValidator = types.LoadPrivValidator(privValidatorFile)
+		privValidator.Reset()
+		log.Notice("Reset PrivValidator", "file", privValidatorFile)
+	} else {
+		privValidator = types.GenPrivValidator()
+		privValidator.SetFile(privValidatorFile)
+		privValidator.Save()
+		log.Notice("Generated PrivValidator", "file", privValidatorFile)
+	}
+
+	// Remove all tendermint data
+	tmDataDir := tmConfig.GetString("db_dir")
+	os.RemoveAll(tmDataDir)
+	log.Notice("Removed Tendermint data", "dir", tmDataDir)
+
+	// Remove all basecoin data
+	basecoinDataDir := path.Join(basecoinDir, "merkleeyes.db")
+	os.RemoveAll(basecoinDataDir)
+	log.Notice("Removed Basecoin data", "dir", basecoinDataDir)
+
+	return nil
+}
diff --git a/docs/guide/basecoin-tool.md b/docs/guide/basecoin-tool.md
new file mode 100644
index 0000000000..a55570a0a9
--- /dev/null
+++ b/docs/guide/basecoin-tool.md
@@ -0,0 +1,110 @@
+# The Basecoin Tool
+
+In previous tutorials we learned the [basics of the `basecoin` CLI](/docs/guides/basecoin-basics)
+and [how to implement a plugin](/docs/guides/example-plugin).
+In this tutorial, we provide more details on using the `basecoin` tool.
+
+# ABCI Server
+
+So far we have run Basecoin and Tendermint in a single process.
+However, since we use ABCI, we can actually run them in different processes.
+First, initialize both Basecoin and Tendermint:
+
+```
+basecoin init
+tendermint init
+```
+
+In one window, run 
+
+```
+basecoin start --abci-server
+```
+
+and in another,
+
+```
+tendermint node
+```
+
+You should see Tendermint start making blocks!
+
+
+# Keys and Genesis
+
+In previous tutorials we used `basecoin init` to initialize `~/.basecoin` with the default configuration.
+This command creates files both for Tendermint and for Basecoin.
+The Tendermint files are stored in `~/.basecoin/tendermint`, and are the same type of files that would exist in `~/.tendermint` after running `tendermint init`.
+For more information on these files, see the [guide to using tendermint](https://tendermint.com/docs/guides/using-tendermint).
+
+Now let's make our own custom Basecoin data.
+
+First, create a new directory:
+
+```
+mkdir example-data
+```
+
+We can tell `basecoin` to use this directory by exporting the `BASECOIN_ROOT` environment variable:
+
+```
+export BASECOIN_ROOT=$(pwd)/example-data
+```
+
+If you're going to be using multiple terminal windows, make sure to add this variable to your shell startup scripts (eg. `~/.bashrc`).
+
+Now, let's create a new private key:
+
+```
+basecoin key new > $BASECOIN_ROOT/key.json
+```
+
+Here's what my `key.json looks like:
+
+```json
+{
+	"address": "15F591CA434CFCCBDEC1D206F3ED3EBA207BFE7D",
+	"priv_key": [
+		1,
+		"737C629667A9EAADBB8E7CF792D5A8F63AA4BB51E06457DDD7FDCC6D7412AAAD43AA6C88034F9EB8D2717CA4BBFCBA745EFF19B13EFCD6F339EDBAAAFCD2F7B3"
+	],
+	"pub_key": [
+		1,
+		"43AA6C88034F9EB8D2717CA4BBFCBA745EFF19B13EFCD6F339EDBAAAFCD2F7B3"
+	]
+}
+```
+
+Yours will look different - each key is randomly derrived.
+
+Now we can make a `genesis.json` file and add an account with our public key:
+
+```json
+[
+  "base/chainID", "example-chain",
+  "base/account", {
+    "pub_key": [1, "43AA6C88034F9EB8D2717CA4BBFCBA745EFF19B13EFCD6F339EDBAAAFCD2F7B3"],
+    "coins": [
+	{
+	  "denom": "gold",
+	  "amount": 1000000000,
+	}
+    ]
+  }
+]
+```
+
+Here we've granted ourselves `1000000000` units of the `gold` token.
+Note that we've also set the `base/chainID` to be `example-chain`.
+All transactions must therefore include the `--chain_id example-chain` in order to make sure they are valid for this chain.
+Previously, we didn't need this flag because we were using the default chain ID ("test_chain_id").
+Now that we're using a custom chain, we need to specify the chain explicitly on the command line.
+
+
+# Reset
+
+You can reset all blockchain data by running:
+
+```
+basecoin unsafe_reset_all
+```