package repository

import (
	"context"
	"errors"
	"time"

	"github.com/google/uuid"
	"github.com/jackc/pgx/v5"
)

// ToolDefinitionRow is ToolDefinition catalog row.
type ToolDefinitionRow struct {
	ID uuid.UUID `json:"id"`
	Code string `json:"code"`
	Title string `json:"title"`
	Description *string `json:"description,omitempty"`
	Active bool `json:"active"`
	System bool `json:"system"`
	UpdatedAt time.Time `json:"updated_at"`
}

// ListToolDefinitions returns ToolDefinition catalog.
func (r *AdminRepo) ListToolDefinitions(ctx context.Context) ([]ToolDefinitionRow, error) {
	rows, err := r.Pool.Query(ctx, `
		SELECT id, code, title, description, active, system, updated_at
		FROM tool_definitions
		ORDER BY active DESC, code ASC LIMIT 500`)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var out []ToolDefinitionRow
	for rows.Next() {
		var row ToolDefinitionRow
		if err := rows.Scan(&row.ID, &row.Code, &row.Title, &row.Description, &row.Active, &row.System, &row.UpdatedAt); err != nil {
			return nil, err
		}
		out = append(out, row)
	}
	return out, rows.Err()
}

// GetToolDefinition loads one by id.
func (r *AdminRepo) GetToolDefinition(ctx context.Context, id uuid.UUID) (*ToolDefinitionRow, error) {
	var row ToolDefinitionRow
	err := r.Pool.QueryRow(ctx, `
		SELECT id, code, title, description, active, system, updated_at
		FROM tool_definitions WHERE id=$1`, id,
	).Scan(&row.ID, &row.Code, &row.Title, &row.Description, &row.Active, &row.System, &row.UpdatedAt)
	if errors.Is(err, pgx.ErrNoRows) {
		return nil, err
	}
	if err != nil {
		return nil, err
	}
	return &row, nil
}