Config hot reload

packages/opencode/src/agent/agent.ts

@@ -5,6 +5,7 @@ import { generateObject, type ModelMessage } from "ai"
 import PROMPT_GENERATE from "./generate.txt"
 import { SystemPrompt } from "../session/system"
 import { Instance } from "../project/instance"
+import { State } from "../project/state"
 import { mergeDeep } from "remeda"
 
 export namespace Agent {
@@ -39,145 +40,149 @@ export namespace Agent {
     })
   export type Info = z.infer<typeof Info>
 
-  const state = Instance.state(async () => {
-    const cfg = await Config.get()
-    const defaultTools = cfg.tools ?? {}
-    const defaultPermission: Info["permission"] = {
-      edit: "allow",
-      bash: {
-        "*": "allow",
-      },
-      webfetch: "allow",
-      doom_loop: "ask",
-      external_directory: "ask",
-    }
-    const agentPermission = mergeAgentPermissions(defaultPermission, cfg.permission ?? {})
-
-    const planPermission = mergeAgentPermissions(
-      {
-        edit: "deny",
+  const state = State.register(
+    "agent",
+    () => Instance.directory,
+    async () => {
+      const cfg = await Config.get()
+      const defaultTools = cfg.tools ?? {}
+      const defaultPermission: Info["permission"] = {
+        edit: "allow",
         bash: {
-          "cut*": "allow",
-          "diff*": "allow",
-          "du*": "allow",
-          "file *": "allow",
-          "find * -delete*": "ask",
-          "find * -exec*": "ask",
-          "find * -fprint*": "ask",
-          "find * -fls*": "ask",
-          "find * -fprintf*": "ask",
-          "find * -ok*": "ask",
-          "find *": "allow",
-          "git diff*": "allow",
-          "git log*": "allow",
-          "git show*": "allow",
-          "git status*": "allow",
-          "git branch": "allow",
-          "git branch -v": "allow",
-          "grep*": "allow",
-          "head*": "allow",
-          "less*": "allow",
-          "ls*": "allow",
-          "more*": "allow",
-          "pwd*": "allow",
-          "rg*": "allow",
-          "sort --output=*": "ask",
-          "sort -o *": "ask",
-          "sort*": "allow",
-          "stat*": "allow",
-          "tail*": "allow",
-          "tree -o *": "ask",
-          "tree*": "allow",
-          "uniq*": "allow",
-          "wc*": "allow",
-          "whereis*": "allow",
-          "which*": "allow",
-          "*": "ask",
+          "*": "allow",
         },
         webfetch: "allow",
-      },
-      cfg.permission ?? {},
-    )
+        doom_loop: "ask",
+        external_directory: "ask",
+      }
+      const agentPermission = mergeAgentPermissions(defaultPermission, cfg.permission ?? {})
 
-    const result: Record<string, Info> = {
-      general: {
-        name: "general",
-        description:
-          "General-purpose agent for researching complex questions, searching for code, and executing multi-step tasks. When you are searching for a keyword or file and are not confident that you will find the right match in the first few tries use this agent to perform the search for you.",
-        tools: {
-          todoread: false,
-          todowrite: false,
-          ...defaultTools,
+      const planPermission = mergeAgentPermissions(
+        {
+          edit: "deny",
+          bash: {
+            "cut*": "allow",
+            "diff*": "allow",
+            "du*": "allow",
+            "file *": "allow",
+            "find * -delete*": "ask",
+            "find * -exec*": "ask",
+            "find * -fprint*": "ask",
+            "find * -fls*": "ask",
+            "find * -fprintf*": "ask",
+            "find * -ok*": "ask",
+            "find *": "allow",
+            "git diff*": "allow",
+            "git log*": "allow",
+            "git show*": "allow",
+            "git status*": "allow",
+            "git branch": "allow",
+            "git branch -v": "allow",
+            "grep*": "allow",
+            "head*": "allow",
+            "less*": "allow",
+            "ls*": "allow",
+            "more*": "allow",
+            "pwd*": "allow",
+            "rg*": "allow",
+            "sort --output=*": "ask",
+            "sort -o *": "ask",
+            "sort*": "allow",
+            "stat*": "allow",
+            "tail*": "allow",
+            "tree -o *": "ask",
+            "tree*": "allow",
+            "uniq*": "allow",
+            "wc*": "allow",
+            "whereis*": "allow",
+            "which*": "allow",
+            "*": "ask",
+          },
+          webfetch: "allow",
         },
-        options: {},
-        permission: agentPermission,
-        mode: "subagent",
-        builtIn: true,
-      },
-      build: {
-        name: "build",
-        tools: { ...defaultTools },
-        options: {},
-        permission: agentPermission,
-        mode: "primary",
-        builtIn: true,
-      },
-      plan: {
-        name: "plan",
-        options: {},
-        permission: planPermission,
-        tools: {
-          ...defaultTools,
+        cfg.permission ?? {},
+      )
+
+      const result: Record<string, Info> = {
+        general: {
+          name: "general",
+          description:
+            "General-purpose agent for researching complex questions, searching for code, and executing multi-step tasks. When you are searching for a keyword or file and are not confident that you will find the right match in the first few tries use this agent to perform the search for you.",
+          tools: {
+            todoread: false,
+            todowrite: false,
+            ...defaultTools,
+          },
+          options: {},
+          permission: agentPermission,
+          mode: "subagent",
+          builtIn: true,
         },
-        mode: "primary",
-        builtIn: true,
-      },
-    }
-    for (const [key, value] of Object.entries(cfg.agent ?? {})) {
-      if (value.disable) {
-        delete result[key]
-        continue
-      }
-      let item = result[key]
-      if (!item)
-        item = result[key] = {
-          name: key,
-          mode: "all",
+        build: {
+          name: "build",
+          tools: { ...defaultTools },
+          options: {},
           permission: agentPermission,
+          mode: "primary",
+          builtIn: true,
+        },
+        plan: {
+          name: "plan",
           options: {},
-          tools: {},
-          builtIn: false,
-        }
-      const { name, model, prompt, tools, description, temperature, top_p, mode, permission, color, ...extra } = value
-      item.options = {
-        ...item.options,
-        ...extra,
+          permission: planPermission,
+          tools: {
+            ...defaultTools,
+          },
+          mode: "primary",
+          builtIn: true,
+        },
       }
-      if (model) item.model = Provider.parseModel(model)
-      if (prompt) item.prompt = prompt
-      if (tools)
+      for (const [key, value] of Object.entries(cfg.agent ?? {})) {
+        if (value.disable) {
+          delete result[key]
+          continue
+        }
+        let item = result[key]
+        if (!item)
+          item = result[key] = {
+            name: key,
+            mode: "all",
+            permission: agentPermission,
+            options: {},
+            tools: {},
+            builtIn: false,
+          }
+        const { name, model, prompt, tools, description, temperature, top_p, mode, color, permission, ...extra } = value
+        item.options = {
+          ...item.options,
+          ...extra,
+        }
+        if (model) item.model = Provider.parseModel(model)
+        if (prompt) item.prompt = prompt
+        if (tools)
+          item.tools = {
+            ...item.tools,
+            ...tools,
+          }
         item.tools = {
+          ...defaultTools,
           ...item.tools,
-          ...tools,
         }
-      item.tools = {
-        ...defaultTools,
-        ...item.tools,
-      }
-      if (description) item.description = description
-      if (temperature != undefined) item.temperature = temperature
-      if (top_p != undefined) item.topP = top_p
-      if (mode) item.mode = mode
-      if (color) item.color = color
-      // just here for consistency & to prevent it from being added as an option
-      if (name) item.name = name
+        if (description) item.description = description
+        if (temperature != undefined) item.temperature = temperature
+        if (top_p != undefined) item.topP = top_p
+        if (mode) item.mode = mode
+        if (color) item.color = color
+        // just here for consistency & to prevent it from being added as an option
+        if (name) item.name = name
 
-      if (permission ?? cfg.permission) {
-        item.permission = mergeAgentPermissions(cfg.permission ?? {}, permission ?? {})
+        if (permission ?? cfg.permission) {
+          item.permission = mergeAgentPermissions(cfg.permission ?? {}, permission ?? {})
+        }
       }
-    }
-    return result
-  })
+      return result
+    },
+  )
 
   export async function get(agent: string) {
     return state().then((x) => x[agent])

packages/opencode/src/command/index.ts

@@ -1,6 +1,7 @@
 import z from "zod"
 import { Config } from "../config/config"
 import { Instance } from "../project/instance"
+import { State } from "../project/state"
 import PROMPT_INITIALIZE from "./template/initialize.txt"
 import { Bus } from "../bus"
 import { Identifier } from "../id/id"
@@ -36,32 +37,36 @@ export namespace Command {
     })
   export type Info = z.infer<typeof Info>
 
-  const state = Instance.state(async () => {
-    const cfg = await Config.get()
+  const state = State.register(
+    "command",
+    () => Instance.directory,
+    async () => {
+      const cfg = await Config.get()
 
-    const result: Record<string, Info> = {}
+      const result: Record<string, Info> = {}
 
-    for (const [name, command] of Object.entries(cfg.command ?? {})) {
-      result[name] = {
-        name,
-        agent: command.agent,
-        model: command.model,
-        description: command.description,
-        template: command.template,
-        subtask: command.subtask,
+      for (const [name, command] of Object.entries(cfg.command ?? {})) {
+        result[name] = {
+          name,
+          agent: command.agent,
+          model: command.model,
+          description: command.description,
+          template: command.template,
+          subtask: command.subtask,
+        }
       }
-    }
 
-    if (result[Default.INIT] === undefined) {
-      result[Default.INIT] = {
-        name: Default.INIT,
-        description: "create/update AGENTS.md",
-        template: PROMPT_INITIALIZE.replace("${path}", Instance.worktree),
+      if (result[Default.INIT] === undefined) {
+        result[Default.INIT] = {
+          name: Default.INIT,
+          description: "create/update AGENTS.md",
+          template: PROMPT_INITIALIZE.replace("${path}", Instance.worktree),
+        }
       }
-    }
 
-    return result
-  })
+      return result
+    },
+  )
 
   export async function get(name: string) {
     return state().then((x) => x[name])

packages/opencode/src/config/backup.ts

@@ -0,0 +1,17 @@
+import fs from "fs/promises"
+
+export async function createBackup(filepath: string): Promise<string> {
+  const timestamp = new Date().toISOString().replace(/[:.]/g, "-")
+  const backupPath = `${filepath}.bak-${timestamp}`
+
+  if (await Bun.file(filepath).exists()) {
+    await fs.copyFile(filepath, backupPath)
+  }
+
+  return backupPath
+}
+
+export async function restoreBackup(backupPath: string, targetPath: string): Promise<void> {
+  await fs.copyFile(backupPath, targetPath)
+  await fs.unlink(backupPath)
+}