package report

import (
	"encoding/json"
	"testing"
	"time"

	"github.com/yuxingu/digital-psychology/apps/api/internal/rhythm"
	"github.com/yuxingu/digital-psychology/apps/api/internal/star"
)

func TestDayKeyCST(t *testing.T) {
	// 2026-08-12 23:30 UTC = 2026-08-13 07:30 CST
	utc := time.Date(2026, 8, 12, 23, 30, 0, 0, time.UTC)
	if got := dayKey(utc); got != "2026-08-13" {
		t.Fatalf("dayKey=%s", got)
	}
}

func TestStarOutlookChangesByDay(t *testing.T) {
	birth := time.Date(1990, 5, 15, 0, 0, 0, 0, time.UTC)
	d1 := time.Date(2026, 8, 12, 10, 0, 0, 0, cstLoc())
	d2 := time.Date(2026, 8, 13, 10, 0, 0, 0, cstLoc())
	a, err := star.BuildWith(star.BuildOpts{Birth: birth, Name: "测", AsOf: d1})
	if err != nil {
		t.Fatal(err)
	}
	b, err := star.BuildWith(star.BuildOpts{Birth: birth, Name: "测", AsOf: d2})
	if err != nil {
		t.Fatal(err)
	}
	if a.Summary["as_of"] != "2026-08-12" || b.Summary["as_of"] != "2026-08-13" {
		t.Fatalf("as_of a=%v b=%v", a.Summary["as_of"], b.Summary["as_of"])
	}
	oa, _ := a.Summary["outlook"].(map[string]any)
	ob, _ := b.Summary["outlook"].(map[string]any)
	da, _ := oa["daily"].(map[string]any)
	db, _ := ob["daily"].(map[string]any)
	if da["score"] == db["score"] && da["tip"] == db["tip"] {
		t.Fatalf("expected daily outlook to differ across days")
	}
	if a.Summary["valid_until"] == nil || b.Summary["valid_until"] == nil {
		t.Fatal("missing valid_until")
	}
}

func TestRhythmTipsChangeByDay(t *testing.T) {
	birth := time.Date(1992, 6, 8, 0, 0, 0, 0, time.UTC)
	d1 := time.Date(2026, 8, 10, 12, 0, 0, 0, cstLoc()) // Mon
	d2 := time.Date(2026, 8, 11, 12, 0, 0, 0, cstLoc()) // Tue
	a := rhythm.BuildWith(birth, "测", d1)
	b := rhythm.BuildWith(birth, "测", d2)
	if a.Summary["as_of"] != "2026-08-10" || b.Summary["as_of"] != "2026-08-11" {
		t.Fatalf("as_of a=%v b=%v", a.Summary["as_of"], b.Summary["as_of"])
	}
	if a.Summary["week_focus"] == b.Summary["week_focus"] && a.Summary["today_tip"] == b.Summary["today_tip"] {
		t.Fatalf("expected tips to differ")
	}
}

func TestSummaryDay(t *testing.T) {
	raw, _ := json.Marshal(map[string]any{"as_of": "2026-08-12"})
	if summaryDay(raw) != "2026-08-12" {
		t.Fatal(summaryDay(raw))
	}
	if summaryDay(json.RawMessage(`{}`)) != "" {
		t.Fatal("empty")
	}
}