package atlas_test

import (
	"testing"

	"git.d-ma.be/mathias/cad-atlas/internal/atlas"
)

// A Gitea /user/repos response, trimmed to the fields RepoNodes reads.
const repoList = `[
  {"name":"cad-atlas","full_name":"mathias/cad-atlas","description":"Visualising the CAD workflow","html_url":"https://git.d-ma.be/mathias/cad-atlas","archived":false,"language":"Go"},
  {"name":"dispatch","full_name":"mathias/dispatch","description":"","html_url":"https://git.d-ma.be/mathias/dispatch","archived":false,"language":""},
  {"name":"old-thing","full_name":"mathias/old-thing","description":"retired","html_url":"https://git.d-ma.be/mathias/old-thing","archived":true,"language":"Go"}
]`

func TestRepoNodes_OneNodePerRepoWithDescriptionAndURL(t *testing.T) {
	nodes, err := atlas.RepoNodes([]byte(repoList))
	if err != nil {
		t.Fatalf("RepoNodes: %v", err)
	}
	if len(nodes) != 2 {
		t.Fatalf("want 2 nodes (archived excluded), got %d", len(nodes))
	}
	if nodes[0].Title != "cad-atlas" {
		t.Fatalf("title = %q, want %q", nodes[0].Title, "cad-atlas")
	}
	if nodes[0].URL != "https://git.d-ma.be/mathias/cad-atlas" {
		t.Fatalf("url = %q", nodes[0].URL)
	}
	if nodes[0].Desc != "Visualising the CAD workflow" {
		t.Fatalf("desc = %q", nodes[0].Desc)
	}
}

// Mirrors IssueNodes' tagging so the two live slices read identically on stage.
func TestRepoNodes_TagsCarryLiveMarkerAndLanguage(t *testing.T) {
	nodes, err := atlas.RepoNodes([]byte(repoList))
	if err != nil {
		t.Fatalf("RepoNodes: %v", err)
	}
	if len(nodes) < 2 {
		t.Fatalf("want at least 2 nodes, got %d", len(nodes))
	}
	if len(nodes[0].Tags) != 2 || nodes[0].Tags[0] != "live · Gitea" || nodes[0].Tags[1] != "Go" {
		t.Fatalf("tags = %v, want [live · Gitea Go]", nodes[0].Tags)
	}
	// A repo with no language must not emit an empty tag pill.
	if len(nodes[1].Tags) != 1 || nodes[1].Tags[0] != "live · Gitea" {
		t.Fatalf("tags = %v, want [live · Gitea]", nodes[1].Tags)
	}
}

// Load-bearing: archived repos are explicitly out of scope per the issue.
func TestRepoNodes_ExcludesArchived(t *testing.T) {
	nodes, err := atlas.RepoNodes([]byte(repoList))
	if err != nil {
		t.Fatalf("RepoNodes: %v", err)
	}
	for _, n := range nodes {
		if n.Title == "old-thing" {
			t.Fatalf("archived repo surfaced: %+v", n)
		}
	}
}

func TestRepoNodes_EmptyListReturnsEmptyNotNil(t *testing.T) {
	nodes, err := atlas.RepoNodes([]byte(`[]`))
	if err != nil {
		t.Fatalf("RepoNodes: %v", err)
	}
	if nodes == nil || len(nodes) != 0 {
		t.Fatalf("nodes = %+v, want empty non-nil slice", nodes)
	}
}

func TestRepoNodes_MalformedJSONErrors(t *testing.T) {
	if _, err := atlas.RepoNodes([]byte(`{`)); err == nil {
		t.Fatal("want an error for malformed JSON, got nil")
	}
}