package plugins

import lua "github.com/yuin/gopher-lua"

/*
Plugin hooks:
- Pre local message
- Post local message
- Pre external message (received but not processed by default stuff)
- Post external message (received, internal processing done)
- Post new local account
- Pre new remote account discovered
- Post new remote account discovered
*/

type pluginHolder struct {
	meta  *PluginMetadata
	table *lua.LTable

	// ---- Section hooks

	postLocalMessage            *lua.LFunction
	postExternalMessage         *lua.LFunction
	postNewLocalAccount         *lua.LFunction
	postRemoteAccountDiscovered *lua.LFunction
	// preLocalMessage             *lua.LFunction
	// preExternalMessage          *lua.LFunction // Might not want this
	// preRemoteAccountDiscovered  *lua.LFunction
}

type PluginMetadata struct {
	Name    string `json:"name"`
	Version string `json:"version"`
	// Don't load major and minor versions from meta file, calc from full version instead
	Major     int               `json:"-"`
	Minor     int               `json:"-"`
	Source    string            `json:"source"`
	License   string            `json:"license"`
	Hashes    map[string]string `json:"hashes"`
	EntryFile string            `json:"entry"`
	HookNames map[string]string `json:"hook_names"`
}

const (
	HookPostLocalMessage            = "post-local-message"
	HookPostExternalMessage         = "post-external-message"
	HookPostNewLocalAccount         = "post-new-local-account"
	HookPostRemoteAccountDiscovered = "post-remote-account-discovered"
)

// TODO: Figure out signature
func (p *pluginHolder) PostLocalMessage(l *lua.LState) error {
	// Only act on the hook if a hook exists
	if p.postLocalMessage != nil {
		err := l.CallByParam(lua.P{
			Fn:      p.postLocalMessage,
			NRet:    1, // TODO: Adjust based on signature
			Protect: true,
		}) // TODO: Translate signature arguments into LValues and include here
		if err != nil {
			return err
		}
		// TODO: Translate args on stack back into whats expected from the signature
		panic("not implemented")
	}
	return nil
}