// internal/skills/sessionlog/skill.go
package sessionlog

import (
	"encoding/json"

	"github.com/mathiasbq/supervisor/internal/registry"
)

// Config holds sessionlog skill configuration.
type Config struct {
	SessionsDir string // path to brain/sessions/
}

// Skill implements registry.Skill for the session_log tool.
type Skill struct {
	cfg Config
}

// New constructs a sessionlog Skill.
func New(cfg Config) *Skill { return &Skill{cfg: cfg} }

// Name returns the skill name.
func (s *Skill) Name() string { return "sessionlog" }

// Tools returns the MCP tool definitions.
func (s *Skill) Tools() []registry.ToolDef {
	return []registry.ToolDef{
		{
			Name:        "session_log",
			Description: "Append a structured entry to the current session log. Call after each skill invocation completes to record what happened for retrospective and training data extraction.",
			InputSchema: json.RawMessage(`{
				"type": "object",
				"required": ["session_id"],
				"properties": {
					"session_id":   {"type": "string"},
					"skill":        {"type": "string"},
					"phase":        {"type": "string"},
					"project_root": {"type": "string"},
					"final_status": {"type": "string"},
					"file_path":    {"type": "string"},
					"model_used":   {"type": "string"},
					"duration_ms":  {"type": "integer"},
					"message":      {"type": "string"}
				}
			}`),
		},
	}
}