Files
miti99bot/internal/modules/module.go
T
tiennm99 0584b094d1 feat(modules): port util + misc; expose Registry to handlers
Phase 5a of go-port-cloud-run plan: port first 2 of 4 modules (wordle/loldle
deferred to later phase). Port util.go, info.go, help.go, stickerid.go and
misc.go with tests. /help renders registry view; /info exposes chat/thread/
sender ids; /stickerid (private) returns bot-scoped file_ids; /ping writes
last_ping KV ms-epoch JSON for byte-parity, /mstats reads it, /fortytwo is
easter egg.

Registry-pointer-in-Deps required for /help to access module registry—pointer
captured at factory time, stable post-Build. Static factory catalog moved from
modules pkg to cmd/server to break import cycle. Code-review fixes applied in
same session: /info nil-deref guard, KV wire-format parity.
2026-05-09 08:24:52 +07:00

83 lines
3.2 KiB
Go

package modules
import (
"context"
"github.com/go-telegram/bot"
"github.com/go-telegram/bot/models"
"github.com/tiennm99/miti99bot-go/internal/storage"
)
// Visibility classifies who may invoke a command. The dispatcher does not
// enforce visibility today; the field exists so /help and chat-scoping can
// filter consistently in later phases.
type Visibility int
const (
VisibilityPublic Visibility = iota
VisibilityProtected
VisibilityPrivate
)
// CommandHandler runs in response to a Telegram command. Returning an error
// causes the dispatcher to log the failure. Telegram retries are governed by
// the webhook HTTP status (200), not handler errors — so the error return is
// purely for logging/metrics, not flow control.
type CommandHandler func(ctx context.Context, b *bot.Bot, update *models.Update) error
// CronHandler runs when Cloud Scheduler hits /cron/{name}. Crons receive the
// per-module-prefixed Deps via the registry; handlers should not capture the
// base Deps from the factory closure or KV writes will collide across modules.
type CronHandler func(ctx context.Context, deps Deps) error
// Command is a single Telegram bot command exposed by a module.
type Command struct {
Name string // ^[a-z0-9_]{1,32}$ — Telegram BotFather rules
Visibility Visibility // public/protected/private
Description string // shown in /help (required, non-empty)
Handler CommandHandler // required
}
// Cron is a single scheduled job exposed by a module.
type Cron struct {
Schedule string // documentation only; real schedule lives in Cloud Scheduler
Name string // unique within module
Handler CronHandler // required
}
// Module is a self-contained feature unit: a name plus zero or more commands
// and crons. Modules are constructed by Factory functions that capture their
// per-module Deps via closure.
//
// Module.Name is overridden by the registry to its catalog key; factories may
// leave it blank.
type Module struct {
Name string
Commands []Command
Crons []Cron
}
// Deps is the dependency bundle a Factory receives. Each field is added in the
// phase that introduces it; today KV, Env, and Registry exist (Gemini: Phase 07).
//
// Deps.Env is the process environment with sensitive keys stripped. Modules
// must not assume Env contains every variable — see cmd/server.envForModules.
//
// Deps.Registry is a pointer to the Registry being built. At factory call
// time the Registry is partially populated (only modules earlier in the
// MODULES env order); by the time any handler runs, it is fully populated.
// Modules that need to introspect commands (e.g. /help) capture this pointer
// in their handler closures.
type Deps struct {
KV storage.KVStore // already prefixed with the module name when passed to a Factory
Env map[string]string // process env minus known-sensitive keys
Registry *Registry // populated by Build; safe to capture but read-only at module use
}
// Factory constructs a Module from its Deps. Spec deviation: Phase 03 plan
// defines `Factory func() Module` with a separate Init step. We pass Deps
// directly so handler closures can capture them — idiomatic Go and removes a
// lifecycle ordering trap.
type Factory func(deps Deps) Module