112 lines
3.5 KiB
Go
112 lines
3.5 KiB
Go
package mcp
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import (
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"encoding/json"
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"fmt"
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"git.k6n.net/mats/go-cart-actor/pkg/promotions"
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)
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// AdminTool is one admin promotion tool definition — name, description, input
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// schema, and the invoke function. It mirrors cmsmount.MCPTool but lives in
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// this package so the promotions module doesn't import the CMS module.
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type AdminTool struct {
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Name string
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Description string
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InputSchema json.RawMessage
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Invoke func(args json.RawMessage) (any, error)
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}
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// AdminTools returns the admin-only promotion MCP tool definitions (upsert,
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// set_status, delete). Pass these to cmsmount.AddMCPTools to merge them into
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// the CMS MCP behind full auth.
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func AdminTools(store *promotions.Store, eval *promotions.PromotionService) []AdminTool {
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if eval == nil {
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eval = promotions.NewPromotionService(nil)
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}
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return []AdminTool{
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{
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Name: "upsert_promotion",
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Description: "Create a promotion or replace the existing one with the same id. " +
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"`promotion` is a full promotion-rule object (id, name, status, priority, conditions, actions). " +
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"For a tiered volume discount (Volymrabatt) use a cart_total condition plus a tiered_discount action " +
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"whose config.tiers each have minTotal/maxTotal (öre incl. VAT) and percent.",
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InputSchema: object(props{
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"promotion": obj("the full promotion rule object"),
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}, []string{"promotion"}),
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Invoke: func(args json.RawMessage) (any, error) {
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var a struct {
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Promotion json.RawMessage `json:"promotion"`
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}
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if err := decode(args, &a); err != nil {
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return nil, err
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}
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var rule promotions.PromotionRule
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if err := json.Unmarshal(a.Promotion, &rule); err != nil {
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return nil, fmt.Errorf("invalid promotion: %w", err)
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}
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if rule.ID == "" {
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return nil, fmt.Errorf("promotion.id is required")
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}
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if rule.Status == "" {
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rule.Status = promotions.StatusActive
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}
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replaced, err := store.Upsert(rule)
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if err != nil {
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return nil, err
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}
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return map[string]any{"id": rule.ID, "replaced": replaced}, nil
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},
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},
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{
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Name: "set_promotion_status",
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Description: "Set a promotion's status (active|inactive|scheduled|expired) to toggle it on or off.",
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InputSchema: object(props{
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"id": str("the promotion id"),
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"status": str("new status: active|inactive|scheduled|expired"),
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}, []string{"id", "status"}),
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Invoke: func(args json.RawMessage) (any, error) {
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var a struct {
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ID string `json:"id"`
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Status string `json:"status"`
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}
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if err := decode(args, &a); err != nil {
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return nil, err
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}
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if !validStatus(a.Status) {
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return nil, fmt.Errorf("invalid status %q", a.Status)
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}
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found, err := store.SetStatus(a.ID, promotions.PromotionStatus(a.Status))
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if err != nil {
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return nil, err
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}
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if !found {
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return nil, fmt.Errorf("promotion %q not found", a.ID)
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}
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return map[string]any{"id": a.ID, "status": a.Status}, nil
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},
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},
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{
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Name: "delete_promotion",
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Description: "Delete a promotion rule by id.",
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InputSchema: object(props{"id": str("the promotion id")}, []string{"id"}),
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Invoke: func(args json.RawMessage) (any, error) {
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var a struct {
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ID string `json:"id"`
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}
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if err := decode(args, &a); err != nil {
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return nil, err
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}
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found, err := store.Delete(a.ID)
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if err != nil {
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return nil, err
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}
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if !found {
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return nil, fmt.Errorf("promotion %q not found", a.ID)
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}
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return map[string]any{"id": a.ID, "deleted": true}, nil
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},
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},
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}
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}
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