package handlers

import (
	"net/http"

	"github.com/breakpilot/ai-compliance-sdk/internal/iace"
	"github.com/gin-gonic/gin"
)

// ListFailureKnowledge handles GET /failure-knowledge.
// Read-only unified failure-knowledge ontology (Component → FailureMode →
// Mechanism → Effect → Hazard → Harm → Control) curated from commercially-usable
// open sources (currently NASA NTRS, public domain). Optional ?domain= filter.
// This is the shared corpus that seeds the FMEA library and the CE hazard side.
func (h *IACEHandler) ListFailureKnowledge(c *gin.Context) {
	var items []iace.FailureKnowledge
	if d := c.Query("domain"); d != "" {
		items = iace.FailureKnowledgeByDomain(d)
	} else {
		items = iace.AllFailureKnowledge()
	}
	if items == nil {
		items = []iace.FailureKnowledge{}
	}
	c.JSON(http.StatusOK, gin.H{
		"failure_knowledge": items,
		"total":             len(items),
	})
}