package store

import (
	"database/sql"
	"errors"

	core "agent-system-core"
)

// ---- 画像 ----

func (s *Store) SaveProfile(p core.AgentProfile) error {
	_, err := s.db.Exec(`INSERT OR REPLACE INTO profiles(id,builtin,payload) VALUES(?,?,?)`,
		p.ID, boolInt(p.Builtin), marshalJSON(p))
	return err
}

func (s *Store) ListProfiles() ([]core.AgentProfile, error) {
	rows, err := s.db.Query(`SELECT payload FROM profiles ORDER BY builtin DESC, id`)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var out []core.AgentProfile
	for rows.Next() {
		var payload string
		if err := rows.Scan(&payload); err != nil {
			return nil, err
		}
		p, _ := unmarshalJSON[core.AgentProfile](payload)
		out = append(out, p)
	}
	return out, rows.Err()
}

func (s *Store) GetProfile(id string) (core.AgentProfile, error) {
	var payload string
	err := s.db.QueryRow(`SELECT payload FROM profiles WHERE id=?`, id).Scan(&payload)
	if errors.Is(err, sql.ErrNoRows) {
		return core.AgentProfile{}, ErrNotFound
	}
	if err != nil {
		return core.AgentProfile{}, err
	}
	return unmarshalJSON[core.AgentProfile](payload)
}

func (s *Store) DeleteProfile(id string) error {
	var builtin int
	if err := s.db.QueryRow(`SELECT builtin FROM profiles WHERE id=?`, id).Scan(&builtin); err != nil {
		return err
	}
	if builtin == 1 {
		return errors.New("store: builtin profile cannot be deleted")
	}
	_, err := s.db.Exec(`DELETE FROM profiles WHERE id=?`, id)
	return err
}

// ---- 设置（scope = user | project:<id>）----

func (s *Store) GetSettingsScope(scope string) (map[string]any, error) {
	var payload string
	err := s.db.QueryRow(`SELECT "values" FROM settings WHERE scope=?`, scope).Scan(&payload)
	if errors.Is(err, sql.ErrNoRows) {
		return map[string]any{}, nil
	}
	if err != nil {
		return nil, err
	}
	out, err := unmarshalJSON[map[string]any](payload)
	if err != nil {
		return nil, err
	}
	if out == nil {
		out = map[string]any{}
	}
	return out, nil
}

func (s *Store) MergeSettingsScope(scope string, values map[string]any) error {
	cur, err := s.GetSettingsScope(scope)
	if err != nil {
		return err
	}
	merged := core.MergeSettings(cur, values)
	_, err = s.db.Exec(`INSERT OR REPLACE INTO settings(scope,"values") VALUES(?,?)`, scope, marshalJSON(merged))
	return err
}

func (s *Store) DeleteSettingsScope(scope string) error {
	_, err := s.db.Exec(`DELETE FROM settings WHERE scope=?`, scope)
	return err
}

// ---- 插件注册表（加载状态；能力注册在 pluginhost 内存态）----

func (s *Store) UpsertPlugin(id, dir string, m core.PluginManifest) error {
	_, err := s.db.Exec(`INSERT OR REPLACE INTO plugins(id,dir,manifest,enabled,loaded_at) VALUES(?,?,?,?,?)`,
		id, dir, marshalJSON(m), 1, nowISO())
	return err
}

func (s *Store) ListPlugins() ([]core.PluginManifest, error) {
	rows, err := s.db.Query(`SELECT manifest FROM plugins ORDER BY id`)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var out []core.PluginManifest
	for rows.Next() {
		var payload string
		if err := rows.Scan(&payload); err != nil {
			return nil, err
		}
		m, _ := unmarshalJSON[core.PluginManifest](payload)
		out = append(out, m)
	}
	return out, rows.Err()
}

func (s *Store) RemovePlugin(id string) error {
	_, err := s.db.Exec(`DELETE FROM plugins WHERE id=?`, id)
	return err
}