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package gui
import (
"fmt"
"github.com/isacikgoz/gitbatch/pkg/git"
"github.com/isacikgoz/gitbatch/pkg/queue"
"github.com/jroimartin/gocui"
log "github.com/sirupsen/logrus"
)
// Gui struct hold the gocui struct along with the gui's state, also keybindings
// are tied with this struct in order to render those in different occasions
type Gui struct {
g *gocui.Gui
KeyBindings []*KeyBinding
State guiState
}
// guiState struct holds the repositories, directiories, mode and queue of the
// gui object. These values are not static
type guiState struct {
Repositories []*git.RepoEntity
Directories []string
Mode mode
Queue *queue.JobQueue
}
// this struct encapsulates the name and title of a view. the name of a view is
// passed around so much it is added so that I don't need to wirte names again
type viewFeature struct {
Name string
Title string
}
// mode of the gui
type mode struct {
ModeID ModeID
DisplayString string
CommandString string
}
// ModeID is the mode indicator for the gui
type ModeID string
const (
// FetchMode puts the gui in fetch state
FetchMode ModeID = "fetch"
// PullMode puts the gui in pull state
PullMode ModeID = "pull"
// MergeMode puts the gui in merge state
MergeMode ModeID = "merge"
)
var (
mainViewFeature = viewFeature{Name: "main", Title: " Matched Repositories "}
loadingViewFeature = viewFeature{Name: "loading", Title: " Loading in Progress "}
branchViewFeature = viewFeature{Name: "branch", Title: " Local Branches "}
remoteViewFeature = viewFeature{Name: "remotes", Title: " Remotes "}
remoteBranchViewFeature = viewFeature{Name: "remotebranches", Title: " Remote Branches "}
commitViewFeature = viewFeature{Name: "commits", Title: " Commits "}
scheduleViewFeature = viewFeature{Name: "schedule", Title: " Schedule "}
keybindingsViewFeature = viewFeature{Name: "keybindings", Title: " Keybindings "}
diffViewFeature = viewFeature{Name: "diff", Title: " Diff Detail "}
cheatSheetViewFeature = viewFeature{Name: "cheatsheet", Title: " Application Controls "}
errorViewFeature = viewFeature{Name: "error", Title: " Error "}
fetchMode = mode{ModeID: FetchMode, DisplayString: "Fetch", CommandString: "fetch"}
pullMode = mode{ModeID: PullMode, DisplayString: "Pull", CommandString: "pull"}
mergeMode = mode{ModeID: MergeMode, DisplayString: "Merge", CommandString: "merge"}
mainViews = []viewFeature{mainViewFeature, remoteViewFeature, remoteBranchViewFeature, branchViewFeature, commitViewFeature}
modes = []mode{fetchMode, pullMode, mergeMode}
)
// NewGui creates a Gui opject and fill it's state related entites
func NewGui(mode string, directoies []string) (*Gui, error) {
initialState := guiState{
Directories: directoies,
Mode: fetchMode,
Queue: queue.CreateJobQueue(),
}
gui := &Gui{
State: initialState,
}
for _, m := range modes {
if string(m.ModeID) == mode {
gui.State.Mode = m
break
}
}
return gui, nil
}
// Run function runs the main loop with initial values
func (gui *Gui) Run() error {
g, err := gocui.NewGui(gocui.OutputNormal)
if err != nil {
return err
}
// start an async view apart from this loop to show loading screen
go func(g_ui *Gui) {
maxX, maxY := g.Size()
// TODO: view size can be handled in a more smart way
v, err := g.SetView(loadingViewFeature.Name, maxX/2-10, maxY/2-1, maxX/2+10, maxY/2+1)
if err != nil {
if err != gocui.ErrUnknownView {
log.Warn("Loading view cannot be created.")
return
}
fmt.Fprintln(v, "Loading...")
}
if _, err := g.SetCurrentView(loadingViewFeature.Name); err != nil {
log.Warn("Loading view cannot be focused.")
return
}
rs, err := git.LoadRepositoryEntities(g_ui.State.Directories)
if err != nil {
g.Close()
log.Fatal(err)
return
}
g_ui.State.Repositories = rs
gui.fillMain(g)
}(gui)
defer g.Close()
gui.g = g
g.Highlight = true
g.SelFgColor = gocui.ColorGreen
// If InputEsc is true, when ESC sequence is in the buffer and it doesn't
// match any known sequence, ESC means KeyEsc.
g.InputEsc = true
g.SetManagerFunc(gui.layout)
if err := gui.generateKeybindings(); err != nil {
log.Error("Keybindings could not be created.")
return err
}
if err := gui.keybindings(g); err != nil {
log.Error("Keybindings could not be set.")
return err
}
if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Error("Error in the main loop. " + err.Error())
return err
}
return nil
}
// set the layout and create views with their default size, name etc. values
// TODO: window sizes can be handled better
func (gui *Gui) layout(g *gocui.Gui) error {
maxX, maxY := g.Size()
if v, err := g.SetView(mainViewFeature.Name, 0, 0, int(0.55*float32(maxX))-1, maxY-2); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = mainViewFeature.Title
v.Overwrite = true
}
if v, err := g.SetView(remoteViewFeature.Name, int(0.55*float32(maxX)), 0, maxX-1, int(0.10*float32(maxY))); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = remoteViewFeature.Title
v.Wrap = false
v.Autoscroll = false
}
if v, err := g.SetView(remoteBranchViewFeature.Name, int(0.55*float32(maxX)), int(0.10*float32(maxY))+1, maxX-1, int(0.35*float32(maxY))); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = remoteBranchViewFeature.Title
v.Wrap = false
v.Overwrite = false
}
if v, err := g.SetView(branchViewFeature.Name, int(0.55*float32(maxX)), int(0.35*float32(maxY))+1, maxX-1, int(0.60*float32(maxY))); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = branchViewFeature.Title
v.Wrap = false
v.Autoscroll = false
}
if v, err := g.SetView(commitViewFeature.Name, int(0.55*float32(maxX)), int(0.60*float32(maxY))+1, maxX-1, maxY-2); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = commitViewFeature.Title
v.Wrap = false
v.Autoscroll = false
}
if v, err := g.SetView(keybindingsViewFeature.Name, -1, maxY-2, maxX, maxY); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.BgColor = gocui.ColorWhite
v.FgColor = gocui.ColorBlack
v.Frame = false
gui.updateKeyBindingsView(g, mainViewFeature.Name)
}
return nil
}
// focus to next view
func (gui *Gui) nextMainView(g *gocui.Gui, v *gocui.View) error {
err := gui.nextViewOfGroup(g, v, mainViews)
return err
}
// focus to previous view
func (gui *Gui) previousMainView(g *gocui.Gui, v *gocui.View) error {
err := gui.previousViewOfGroup(g, v, mainViews)
return err
}
// quit from the gui and end its loop
func (gui *Gui) quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}
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