package tui

import (
	"strings"
	"testing"

	"charm.land/lipgloss/v2"
	"superwork-tui/internal/issue"
)

// TestBoardView_NeverExceedsTerminalHeight reproduces the interactive overflow
// bug: with double-width CJK titles, cards wrap inside the fixed-width column box
// to more rows than windowCards budgeted (it measured pre-wrap heights), so the
// board grew taller than the terminal and the altscreen renderer pushed headers
// and short columns off the top. The board must always fit m.height.
func TestBoardView_NeverExceedsTerminalHeight(t *testing.T) {
	mk := func(n int, col issue.Column, title string) issue.Issue {
		return issue.Issue{Number: n, Title: title, Column: col, PR: "240", Branch: "feature/abc"}
	}
	var issues []issue.Issue
	for i := 0; i < 11; i++ {
		issues = append(issues, mk(238-i, issue.ColumnTodo, "支持部署时使用客户自定义域名并自动签发证书与续期"))
	}
	for i := 0; i < 4; i++ {
		issues = append(issues, mk(239-i, issue.ColumnReview, "分销裂变系统V1：一级分销 + 邀请注册归因 + 订单返佣 + T+30 结算"))
	}
	for i := 0; i < 101; i++ {
		issues = append(issues, mk(226-i, issue.ColumnDone, "充值页面前端完全重构为电商风格（含 PC/移动端专用 UI）"))
	}

	for _, dims := range [][2]int{{250, 55}, {200, 50}, {180, 40}, {160, 30}} {
		for _, colIdx := range []int{0, 3} {
			m := Model{
				state:      stateLoaded,
				issues:     issues,
				buckets:    bucketize(issues),
				width:      dims[0],
				height:     dims[1],
				colIdx:     colIdx,
				statusMsg:  "webhook：端口 17421 已被占用",
				hasChanges: true,
			}
			out := m.boardView()
			if h := lipgloss.Height(out); h > m.height {
				t.Errorf("dims=%v colIdx=%d: boardView height %d exceeds terminal height %d", dims, colIdx, h, m.height)
			}
		}
	}
}

func TestBoardView_ShowsAllNonEmptyColumns(t *testing.T) {
	var issues []issue.Issue
	for i := 0; i < 11; i++ {
		issues = append(issues, issue.Issue{Number: 1000 + i, Title: "TODOCARD", Column: issue.ColumnTodo})
	}
	for i := 0; i < 4; i++ {
		issues = append(issues, issue.Issue{Number: 2000 + i, Title: "REVIEWCARD", Column: issue.ColumnReview})
	}
	for i := 0; i < 101; i++ {
		issues = append(issues, issue.Issue{Number: 3000 + i, Title: "DONECARD", Column: issue.ColumnDone})
	}
	m := Model{
		state:   stateLoaded,
		issues:  issues,
		buckets: bucketize(issues),
		width:   200,
		height:  50,
	}
	out := m.boardView()
	for _, want := range []string{"TODOCARD", "REVIEWCARD", "DONECARD"} {
		if !strings.Contains(out, want) {
			t.Errorf("%s missing from boardView", want)
		}
	}
}

// Realistic: long wrapping Chinese titles, badges, screenshot-like dimensions,
// and selection on the done column (rightmost). Reproduces the real board shape.
func TestBoardView_RealisticDistribution(t *testing.T) {
	mk := func(n int, col issue.Column, title string) issue.Issue {
		return issue.Issue{
			Number: n, Title: title, Column: col,
			SpecFile: "docs/superpowers/specs/x/spec.md",
			PlanFile: "docs/superpowers/plans/x/plan.md",
			PR:       "240", Branch: "feature/abc123",
		}
	}
	var issues []issue.Issue
	issues = append(issues, mk(238, issue.ColumnTodo, "TODOMARK 支持部署时使用客户自定义域名"))
	for i := 0; i < 10; i++ {
		issues = append(issues, mk(220-i, issue.ColumnTodo, "✨ 裂变机制：邀请拉新双向激励（邀请码 + token credit 返利）"))
	}
	issues = append(issues, mk(239, issue.ColumnReview, "REVIEWMARK 分销裂变系统V1"))
	for i := 0; i < 3; i++ {
		issues = append(issues, mk(232-i, issue.ColumnReview, "✨ 实现 Claude Code /rewind 效果：会话与代码/沙箱状态回退"))
	}
	for i := 0; i < 101; i++ {
		issues = append(issues, mk(222-i, issue.ColumnDone, "DONEMARK 用户内容免责协议"))
	}

	for _, dims := range [][2]int{{250, 55}, {200, 50}, {180, 40}} {
		for _, colIdx := range []int{0, 3} {
			m := Model{
				state:   stateLoaded,
				issues:  issues,
				buckets: bucketize(issues),
				width:   dims[0],
				height:  dims[1],
				colIdx:  colIdx,
			}
			out := m.boardView()
			for _, want := range []string{"TODOMARK", "REVIEWMARK", "DONEMARK"} {
				if !strings.Contains(out, want) {
					t.Errorf("dims=%v colIdx=%d: %q missing from boardView", dims, colIdx, want)
				}
			}
		}
	}
}