1 files changed, 87 insertions, 0 deletions
diff --git a/packages/anastasis-cli/src/index.ts b/packages/anastasis-cli/src/index.ts
new file mode 100644
index 000000000..7c011569f
--- /dev/null
+++ b/packages/anastasis-cli/src/index.ts
@@ -0,0 +1,87 @@
+import { clk } from "@gnu-taler/taler-util/clk";
+import {
+  discoverPolicies,
+  getBackupStartState,
+  getRecoveryStartState,
+  reduceAction,
+} from "@gnu-taler/anastasis-core";
+import fs from "fs";
+import { j2s } from "@gnu-taler/taler-util";
+
+export const reducerCli = clk.program("anastasis-cli", {
+  help: "Command line interface for Anastasis.",
+});
+
+reducerCli
+  .subcommand("reducer", "reduce", {
+    help: "Run the anastasis reducer",
+  })
+  .flag("initBackup", ["-b", "--backup"])
+  .flag("initRecovery", ["-r", "--restore"])
+  .maybeOption("argumentsJson", ["-a", "--arguments"], clk.STRING)
+  .maybeArgument("action", clk.STRING)
+  .maybeArgument("stateFile", clk.STRING)
+  .action(async (x) => {
+    if (x.reducer.initBackup) {
+      console.log(JSON.stringify(await getBackupStartState()));
+      return;
+    } else if (x.reducer.initRecovery) {
+      console.log(JSON.stringify(await getRecoveryStartState()));
+      return;
+    }
+
+    const action = x.reducer.action;
+    if (!action) {
+      console.log("action required");
+      return;
+    }
+
+    let lastState: any;
+    if (x.reducer.stateFile) {
+      const s = fs.readFileSync(x.reducer.stateFile, { encoding: "utf-8" });
+      lastState = JSON.parse(s);
+    } else {
+      const s = await read(process.stdin);
+      lastState = JSON.parse(s);
+    }
+
+    let args: any;
+    if (x.reducer.argumentsJson) {
+      args = JSON.parse(x.reducer.argumentsJson);
+    } else {
+      args = {};
+    }
+
+    const nextState = await reduceAction(lastState, action, args);
+    console.log(JSON.stringify(nextState));
+  });
+
+reducerCli
+  .subcommand("discover", "discover", {
+    help: "Run the anastasis reducer",
+  })
+  .maybeArgument("stateFile", clk.STRING)
+  .action(async (args) => {
+    let lastState: any;
+    if (args.discover.stateFile) {
+      const s = fs.readFileSync(args.discover.stateFile, { encoding: "utf-8" });
+      lastState = JSON.parse(s);
+    } else {
+      const s = await read(process.stdin);
+      lastState = JSON.parse(s);
+    }
+    const res = await discoverPolicies(lastState);
+    console.log(j2s(res));
+  });
+
+async function read(stream: NodeJS.ReadStream): Promise<string> {
+  const chunks = [];
+  for await (const chunk of stream) {
+    chunks.push(chunk);
+  }
+  return Buffer.concat(chunks).toString("utf8");
+}
+
+export function reducerCliMain() {
+  reducerCli.run();
+}