syntax = "proto3";

package plugin.v1;

option go_package = "code.gitcaddy.com/server/v3/modules/plugins/pluginv1;pluginv1";
option csharp_namespace = "GitCaddy.AI.Plugin.Proto";

import "google/protobuf/struct.proto";
import "google/protobuf/timestamp.proto";

// PluginService is the RPC interface that external plugins must implement.
// The server calls these methods to manage the plugin's lifecycle and dispatch events.
service PluginService {
    // Initialize is called when the server starts or the plugin is loaded
    rpc Initialize(InitializeRequest) returns (InitializeResponse);
    // Shutdown is called when the server is shutting down
    rpc Shutdown(ShutdownRequest) returns (ShutdownResponse);
    // HealthCheck checks if the plugin is healthy
    rpc HealthCheck(PluginHealthCheckRequest) returns (PluginHealthCheckResponse);
    // GetManifest returns the plugin's manifest describing its capabilities
    rpc GetManifest(GetManifestRequest) returns (PluginManifest);
    // OnEvent is called when an event the plugin is subscribed to occurs
    rpc OnEvent(PluginEvent) returns (EventResponse);
    // HandleHTTP proxies an HTTP request to the plugin
    rpc HandleHTTP(HTTPRequest) returns (HTTPResponse);
}

message InitializeRequest {
    string server_version = 1;
    map<string, string> config = 2;
    // protocol_version is the plugin protocol version the server supports.
    // The current version is 1. Plugins should check this to know what RPCs
    // the server may call. A value of 0 means the server predates versioning.
    int32 protocol_version = 3;
}

message InitializeResponse {
    bool success = 1;
    string error = 2;
    PluginManifest manifest = 3;
    // protocol_version is the plugin protocol version the plugin supports.
    // The current version is 1. The server uses this to avoid calling RPCs
    // that the plugin doesn't implement. A value of 0 means the plugin
    // predates versioning and is treated as protocol version 1.
    int32 protocol_version = 4;
}

message ShutdownRequest {
    string reason = 1;
}

message ShutdownResponse {
    bool success = 1;
}

message PluginHealthCheckRequest {}

message PluginHealthCheckResponse {
    bool healthy = 1;
    string status = 2;
    map<string, string> details = 3;
}

message GetManifestRequest {}

message PluginManifest {
    string name = 1;
    string version = 2;
    string description = 3;
    repeated string subscribed_events = 4;
    repeated PluginRoute routes = 5;
    repeated string required_permissions = 6;
    string license_tier = 7;
}

message PluginRoute {
    string method = 1;
    string path = 2;
    string description = 3;
}

message PluginEvent {
    string event_type = 1;
    google.protobuf.Struct payload = 2;
    google.protobuf.Timestamp timestamp = 3;
    int64 repo_id = 4;
    int64 org_id = 5;
}

message EventResponse {
    bool handled = 1;
    string error = 2;
}

message HTTPRequest {
    string method = 1;
    string path = 2;
    map<string, string> headers = 3;
    bytes body = 4;
    map<string, string> query_params = 5;
}

message HTTPResponse {
    int32 status_code = 1;
    map<string, string> headers = 2;
    bytes body = 3;
}