package tui

import (
    "fmt"
    "strings"
)

// layoutConfig holds adaptive layout parameters based on terminal size.
type layoutConfig struct {
    ContentPad     int
    ToolIndent     string
    ToolSummaryMax int
    ArgsTruncMax   int
    ResultTruncMax int
    HeaderMode     string // "full" or "compact"
}

// currentLayout returns layout parameters adapted to the current terminal size
// and user compact preference.
func (m *Model) currentLayout() layoutConfig {
    if m.forceCompact || m.width < 80 || m.height < 24 {
        return layoutConfig{
            ContentPad:     2,
            ToolIndent:     "  ",
            ToolSummaryMax: 40,
            ArgsTruncMax:   100,
            ResultTruncMax: 150,
            HeaderMode:     "compact",
        }
    }
    if m.width > 120 {
        return layoutConfig{
            ContentPad:     4,
            ToolIndent:     "      ",
            ToolSummaryMax: 80,
            ArgsTruncMax:   300,
            ResultTruncMax: 500,
            HeaderMode:     "full",
        }
    }
    return layoutConfig{
        ContentPad:     4,
        ToolIndent:     "      ",
        ToolSummaryMax: 60,
        ArgsTruncMax:   200,
        ResultTruncMax: 300,
        HeaderMode:     "full",
    }
}

// contextProgressBar renders a mini progress bar: █████░░░░░ 42%
func contextProgressBar(pct int) string {
    const barWidth = 10
    filled := pct * barWidth / 100
    if filled > barWidth {
        filled = barWidth
    }
    if filled < 0 {
        filled = 0
    }
    return strings.Repeat("█", filled) + strings.Repeat("░", barWidth-filled) + fmt.Sprintf(" %d%%", pct)
}