add help

2 files changed, 191 insertions, 0 deletions

diff --git a/internal/tui/components/core/help.go b/internal/tui/components/core/help.go
new file mode 100644
index 000000000..9402d9362
--- /dev/null
+++ b/internal/tui/components/core/help.go
@@ -0,0 +1,119 @@
+package core
+
+import (
+	"strings"
+
+	"github.com/charmbracelet/bubbles/key"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/kujtimiihoxha/termai/internal/tui/styles"
+)
+
+type HelpCmp interface {
+	tea.Model
+	SetBindings(bindings []key.Binding)
+	Height() int
+}
+
+const (
+	helpWidgetHeight = 12
+)
+
+type helpCmp struct {
+	width    int
+	bindings []key.Binding
+}
+
+func (m *helpCmp) Init() tea.Cmd {
+	return nil
+}
+
+func (m *helpCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		m.width = msg.Width
+	}
+	return m, nil
+}
+
+func (m *helpCmp) View() string {
+	helpKeyStyle := styles.Bold.Foreground(styles.Rosewater).Margin(0, 1, 0, 0)
+	helpDescStyle := styles.Regular.Foreground(styles.Flamingo)
+	// Compile list of bindings to render
+	bindings := removeDuplicateBindings(m.bindings)
+	// Enumerate through each group of bindings, populating a series of
+	// pairs of columns, one for keys, one for descriptions
+	var (
+		pairs []string
+		width int
+		rows  = helpWidgetHeight - 2
+	)
+	for i := 0; i < len(bindings); i += rows {
+		var (
+			keys  []string
+			descs []string
+		)
+		for j := i; j < min(i+rows, len(bindings)); j++ {
+			keys = append(keys, helpKeyStyle.Render(bindings[j].Help().Key))
+			descs = append(descs, helpDescStyle.Render(bindings[j].Help().Desc))
+		}
+		// Render pair of columns; beyond the first pair, render a three space
+		// left margin, in order to visually separate the pairs.
+		var cols []string
+		if len(pairs) > 0 {
+			cols = []string{"   "}
+		}
+		cols = append(cols,
+			strings.Join(keys, "\n"),
+			strings.Join(descs, "\n"),
+		)
+
+		pair := lipgloss.JoinHorizontal(lipgloss.Top, cols...)
+		// check whether it exceeds the maximum width avail (the width of the
+		// terminal, subtracting 2 for the borders).
+		width += lipgloss.Width(pair)
+		if width > m.width-2 {
+			break
+		}
+		pairs = append(pairs, pair)
+	}
+
+	// Join pairs of columns and enclose in a border
+	content := lipgloss.JoinHorizontal(lipgloss.Top, pairs...)
+	return styles.DoubleBorder.Height(rows).PaddingLeft(1).Width(m.width - 2).Render(content)
+}
+
+func removeDuplicateBindings(bindings []key.Binding) []key.Binding {
+	seen := make(map[string]struct{})
+	result := make([]key.Binding, 0, len(bindings))
+
+	// Process bindings in reverse order
+	for i := len(bindings) - 1; i >= 0; i-- {
+		b := bindings[i]
+		k := strings.Join(b.Keys(), " ")
+		if _, ok := seen[k]; ok {
+			// duplicate, skip
+			continue
+		}
+		seen[k] = struct{}{}
+		// Add to the beginning of result to maintain original order
+		result = append([]key.Binding{b}, result...)
+	}
+
+	return result
+}
+
+func (m *helpCmp) SetBindings(bindings []key.Binding) {
+	m.bindings = bindings
+}
+
+func (m helpCmp) Height() int {
+	return helpWidgetHeight
+}
+
+func NewHelpCmp() HelpCmp {
+	return &helpCmp{
+		width:    0,
+		bindings: make([]key.Binding, 0),
+	}
+}
diff --git a/internal/tui/components/core/status.go b/internal/tui/components/core/status.go
index e69de29bb..8c9b3f60b 100644
--- a/internal/tui/components/core/status.go
+++ b/internal/tui/components/core/status.go
@@ -0,0 +1,72 @@
+package core
+
+import (
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/kujtimiihoxha/termai/internal/tui/styles"
+	"github.com/kujtimiihoxha/termai/internal/tui/util"
+	"github.com/kujtimiihoxha/termai/internal/version"
+)
+
+type statusCmp struct {
+	err   error
+	info  string
+	width int
+}
+
+func (m statusCmp) Init() tea.Cmd {
+	return nil
+}
+
+func (m statusCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		m.width = msg.Width
+	case util.ErrorMsg:
+		m.err = msg
+	case util.InfoMsg:
+		m.info = string(msg)
+	}
+	return m, nil
+}
+
+var (
+	versionWidget = styles.Padded.Background(styles.DarkGrey).Foreground(styles.Text).Render(version.Version)
+	helpWidget    = styles.Padded.Background(styles.Grey).Foreground(styles.Text).Render("? help")
+)
+
+func (m statusCmp) View() string {
+	status := styles.Padded.Background(styles.Grey).Foreground(styles.Text).Render("? help")
+
+	if m.err != nil {
+		status += styles.Regular.Padding(0, 1).
+			Background(styles.Red).
+			Foreground(styles.Text).
+			Width(m.availableFooterMsgWidth()).
+			Render(m.err.Error())
+	} else if m.info != "" {
+		status += styles.Padded.
+			Foreground(styles.Base).
+			Background(styles.Green).
+			Width(m.availableFooterMsgWidth()).
+			Render(m.info)
+	} else {
+		status += styles.Padded.
+			Foreground(styles.Base).
+			Background(styles.LightGrey).
+			Width(m.availableFooterMsgWidth()).
+			Render(m.info)
+	}
+
+	status += versionWidget
+	return status
+}
+
+func (m statusCmp) availableFooterMsgWidth() int {
+	// -2 to accommodate padding
+	return max(0, m.width-lipgloss.Width(helpWidget)-lipgloss.Width(versionWidget))
+}
+
+func NewStatusCmp() tea.Model {
+	return &statusCmp{}
+}