package server

import (
	core "agent-system-core"
	"crypto/sha256"
	"encoding/hex"
	"net/http"
)

func (s *Server) taskSource(w http.ResponseWriter, r *http.Request) {
	owner := s.owner(r)
	c, e := s.st.GetCard(owner, r.PathValue("id"))
	if e != nil || c.Task == nil {
		http.NotFound(w, r)
		return
	}
	if _, e = s.st.GetConversation(owner, c.ConversationID); e != nil {
		http.NotFound(w, r)
		return
	}
	var ref *core.TaskSourceRef
	for _, f := range c.Task.Findings {
		for _, src := range f.Sources {
			if src.ID == r.PathValue("sourceId") {
				copy := src
				ref = &copy
				break
			}
		}
	}
	if ref == nil {
		http.NotFound(w, r)
		return
	}
	art, e := s.st.GetArtifact(owner, ref.ArtifactID)
	if e != nil || art.ProjectID != c.ProjectID {
		http.NotFound(w, r)
		return
	}
	data, e := s.st.ArtifactContent(owner, ref.ArtifactID)
	if e != nil {
		http.NotFound(w, r)
		return
	}
	sum := sha256.Sum256(data)
	state := "current"
	if hex.EncodeToString(sum[:]) != ref.ContentHash {
		state = "changed"
		ref.Availability = "changed"
	} else {
		ref.Availability = "available"
	}
	writeJSONOr(w, map[string]any{"source": ref, "versionState": state, "artifact": art}, nil)
}