// TODO: update table every second (to show correct relative time)
package pages

import (
	"tasksquire/common"
	"tasksquire/components/table"
	"tasksquire/taskwarrior"

	"github.com/charmbracelet/bubbles/key"

	// "github.com/charmbracelet/bubbles/table"
	tea "github.com/charmbracelet/bubbletea"
)

type ReportPage struct {
	common *common.Common

	activeReport  *taskwarrior.Report
	activeContext *taskwarrior.Context
	activeProject string
	selectedTask  *taskwarrior.Task
	taskCursor    int

	tasks taskwarrior.Tasks

	taskTable table.Model

	subpage common.Component
}

func NewReportPage(com *common.Common, report *taskwarrior.Report) *ReportPage {
	// return &ReportPage{
	// 	common:        com,
	// 	activeReport:  report,
	// 	activeContext: com.TW.GetActiveContext(),
	// 	activeProject: "",
	// 	taskTable:     table.New(com),
	// }

	p := &ReportPage{
		common:        com,
		activeReport:  report,
		activeContext: com.TW.GetActiveContext(),
		activeProject: "",
		taskTable:     table.New(com),
	}

	p.subpage = NewTaskEditorPage(p.common, taskwarrior.Task{})
	p.subpage.Init()
	p.common.PushPage(p)

	return p
}

func (p *ReportPage) SetSize(width int, height int) {
	p.common.SetSize(width, height)

	p.taskTable.SetWidth(width - p.common.Styles.Base.GetHorizontalFrameSize())
	p.taskTable.SetHeight(height - p.common.Styles.Base.GetVerticalFrameSize())
}

func (p *ReportPage) Init() tea.Cmd {
	return tea.Batch(p.getTasks(), doTick())
}

func (p *ReportPage) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	var cmds []tea.Cmd
	switch msg := msg.(type) {
	case tea.WindowSizeMsg:
		p.SetSize(msg.Width, msg.Height)
	// case BackMsg:
	case tickMsg:
		cmds = append(cmds, p.getTasks())
		cmds = append(cmds, doTick())
		return p, tea.Batch(cmds...)
	case taskMsg:
		p.tasks = taskwarrior.Tasks(msg)
		p.populateTaskTable(p.tasks)
	case UpdateReportMsg:
		p.activeReport = msg
		cmds = append(cmds, p.getTasks())
	case UpdateContextMsg:
		p.activeContext = msg
		p.common.TW.SetContext(msg)
		cmds = append(cmds, p.getTasks())
	case UpdateProjectMsg:
		p.activeProject = string(msg)
		cmds = append(cmds, p.getTasks())
	case UpdatedTasksMsg:
		cmds = append(cmds, p.getTasks())
	case tea.KeyMsg:
		switch {
		case key.Matches(msg, p.common.Keymap.Quit):
			return p, tea.Quit
		case key.Matches(msg, p.common.Keymap.SetReport):
			p.subpage = NewReportPickerPage(p.common, p.activeReport)
			p.subpage.Init()
			p.common.PushPage(p)
			return p.subpage, nil
		case key.Matches(msg, p.common.Keymap.SetContext):
			p.subpage = NewContextPickerPage(p.common)
			p.subpage.Init()
			p.common.PushPage(p)
			return p.subpage, nil
		case key.Matches(msg, p.common.Keymap.Add):
			p.subpage = NewTaskEditorPage(p.common, taskwarrior.NewTask())
			p.subpage.Init()
			p.common.PushPage(p)
			return p.subpage, nil
		case key.Matches(msg, p.common.Keymap.Edit):
			p.subpage = NewTaskEditorPage(p.common, *p.selectedTask)
			p.subpage.Init()
			p.common.PushPage(p)
			return p.subpage, nil
		case key.Matches(msg, p.common.Keymap.Ok):
			p.common.TW.SetTaskDone(p.selectedTask)
			return p, p.getTasks()
		case key.Matches(msg, p.common.Keymap.Delete):
			p.common.TW.DeleteTask(p.selectedTask)
			return p, p.getTasks()
		case key.Matches(msg, p.common.Keymap.SetProject):
			p.subpage = NewProjectPickerPage(p.common, p.activeProject)
			p.subpage.Init()
			p.common.PushPage(p)
			return p.subpage, nil
		case key.Matches(msg, p.common.Keymap.Tag):
			if p.selectedTask != nil {
				tag := p.common.TW.GetConfig().Get("uda.tasksquire.tag.default")
				if p.selectedTask.HasTag(tag) {
					p.selectedTask.RemoveTag(tag)
				} else {
					p.selectedTask.AddTag(tag)
				}
				p.common.TW.ImportTask(p.selectedTask)
				return p, p.getTasks()
			}
			return p, nil
		case key.Matches(msg, p.common.Keymap.Undo):
			p.common.TW.Undo()
			return p, p.getTasks()
		case key.Matches(msg, p.common.Keymap.StartStop):
			if p.selectedTask != nil && p.selectedTask.Status == "pending" {
				if p.selectedTask.Start == "" {
					p.common.TW.StartTask(p.selectedTask)
				} else {
					p.common.TW.StopTask(p.selectedTask)
				}
				return p, p.getTasks()
			}
		}
	}

	var cmd tea.Cmd
	p.taskTable, cmd = p.taskTable.Update(msg)
	cmds = append(cmds, cmd)

	if p.tasks != nil && len(p.tasks) > 0 {
		p.selectedTask = p.tasks[p.taskTable.Cursor()]
	} else {
		p.selectedTask = nil
	}

	return p, tea.Batch(cmds...)
}

func (p *ReportPage) View() string {
	// return p.common.Styles.Main.Render(p.taskTable.View()) + "\n"
	if p.tasks == nil || len(p.tasks) == 0 {
		return p.common.Styles.Base.Render("No tasks found")
	}
	return p.taskTable.View()
}

func (p *ReportPage) populateTaskTable(tasks taskwarrior.Tasks) {
	if len(tasks) == 0 {
		return
	}

	selected := p.taskTable.Cursor()

	if p.selectedTask != nil {
		for i, task := range tasks {
			if task.Uuid == p.selectedTask.Uuid {
				selected = i
			}
		}
	}
	if selected > len(tasks)-1 {
		selected = len(tasks) - 1
	}

	p.taskTable = table.New(
		p.common,
		table.WithReport(p.activeReport),
		table.WithTasks(tasks),
		table.WithFocused(true),
		table.WithWidth(p.common.Width()-p.common.Styles.Base.GetVerticalFrameSize()),
		table.WithHeight(p.common.Height()-p.common.Styles.Base.GetHorizontalFrameSize()-1),
		table.WithStyles(p.common.Styles.TableStyle),
	)

	if selected == 0 {
		selected = p.taskTable.Cursor()
	}
	if selected < len(tasks) {
		p.taskTable.SetCursor(selected)
	} else {
		p.taskTable.SetCursor(len(p.tasks) - 1)
	}
}

func (p *ReportPage) getTasks() tea.Cmd {
	return func() tea.Msg {
		filters := []string{}
		if p.activeProject != "" {
			filters = append(filters, "project:"+p.activeProject)
		}
		tasks := p.common.TW.GetTasks(p.activeReport, filters...)
		return taskMsg(tasks)
	}
}