package main

import (
	"os"
	"path/filepath"
	"testing"
)

func writeFixture(t *testing.T, dir, name, content string) {
	t.Helper()
	if err := os.WriteFile(filepath.Join(dir, name), []byte(content), 0o644); err != nil {
		t.Fatalf("write %s: %v", name, err)
	}
}

func TestLoadIssueCards_MapsStatusesAndSkipsNonIssues(t *testing.T) {
	dir := t.TempDir()
	writeFixture(t, dir, "README.md", "skip me")
	writeFixture(t, dir, "AGENT_GUIDE.md", "skip me too")
	writeFixture(t, dir, "0001-foo.md", "---\n"+
		"id: \"0001\"\n"+
		"title: \"Foo\"\n"+
		"status: pendiente\n"+
		"priority: alta\n"+
		"type: feature\n"+
		"tags: [x, y]\n"+
		"flow: \"0008\"\n"+
		"created: 2026-05-18\n"+
		"updated: 2026-05-18\n"+
		"---\n# Foo\n\nDescription body line 1.\nLine 2.\n")
	writeFixture(t, dir, "0002-bar.md", "---\n"+
		"id: \"0002\"\n"+
		"title: \"Bar\"\n"+
		"status: en-curso\n"+
		"---\nBody\n")
	writeFixture(t, dir, "0003-baz.md", "---\n"+
		"id: \"0003\"\n"+
		"title: \"Baz\"\n"+
		"status: done\n"+
		"---\nBody\n")

	cards, err := loadIssueCards(dir)
	if err != nil {
		t.Fatalf("load: %v", err)
	}
	if len(cards) != 3 {
		t.Fatalf("expected 3 cards, got %d: %#v", len(cards), cards)
	}
	byID := map[string]IssueCard{}
	for _, c := range cards {
		byID[c.ID] = c
	}
	if c := byID["0001"]; c.ColumnID != "Backlog" || c.Priority != "alta" || c.FlowID != "0008" || c.Type != "feature" {
		t.Fatalf("0001 mismapped: %#v", c)
	}
	if c := byID["0002"]; c.ColumnID != "Doing" {
		t.Fatalf("0002 expected Doing, got %s", c.ColumnID)
	}
	if c := byID["0003"]; c.ColumnID != "Done" {
		t.Fatalf("0003 expected Done, got %s", c.ColumnID)
	}
	// Description must contain body content but NOT the title heading.
	if c := byID["0001"]; c.Description == "" {
		t.Fatalf("0001 missing description")
	}
}

func TestLoadIssueCards_MalformedYAMLDoesNotCrash(t *testing.T) {
	dir := t.TempDir()
	writeFixture(t, dir, "0010-bad.md", "---\nid: \"0010\"\ntitle: \"Bad\"\nstatus: pendiente\n  : malformed\n---\nbody\n")

	cards, err := loadIssueCards(dir)
	if err != nil {
		t.Fatalf("expected no top-level error, got: %v", err)
	}
	if len(cards) != 1 {
		t.Fatalf("expected 1 card (with parse error), got %d", len(cards))
	}
	if cards[0].ParseError == "" {
		t.Fatalf("expected ParseError to be set on malformed card")
	}
	if cards[0].ID != "0010" {
		t.Fatalf("expected id 0010 derived from filename, got %q", cards[0].ID)
	}
}

func TestLoadIssueCards_MissingStatusDefaultsPendiente(t *testing.T) {
	dir := t.TempDir()
	writeFixture(t, dir, "0011-nostatus.md", "---\nid: \"0011\"\ntitle: \"NoStatus\"\n---\nbody\n")
	cards, err := loadIssueCards(dir)
	if err != nil {
		t.Fatalf("load: %v", err)
	}
	if len(cards) != 1 {
		t.Fatalf("expected 1 card, got %d", len(cards))
	}
	if cards[0].Status != "pendiente" {
		t.Fatalf("expected default status pendiente, got %q", cards[0].Status)
	}
	if cards[0].ColumnID != "Backlog" {
		t.Fatalf("expected column Backlog, got %q", cards[0].ColumnID)
	}
}

func TestIssuesCacheTTL(t *testing.T) {
	// Sanity: a fresh cache misses.
	cache := &cardsCache{ttl: 30 * 1_000_000_000} // 30s in ns
	if _, ok := cache.get(); ok {
		t.Fatalf("expected miss on empty cache")
	}
	cache.set([]IssueCard{{ID: "0001"}})
	if c, ok := cache.get(); !ok || len(c) != 1 {
		t.Fatalf("expected cache hit")
	}
	cache.invalidate()
	if _, ok := cache.get(); ok {
		t.Fatalf("expected miss after invalidate")
	}
}