// Package view provides TUI rendering functionality
package view

import (
	"strings"

	"github.com/charmbracelet/lipgloss"
	"github.com/jfraeys/fetch_ml/cmd/tui/internal/model"
)

// NarrativeView displays job research context and outcome
type NarrativeView struct {
	Width  int
	Height int
}

// View renders the narrative/outcome for a job
func (v *NarrativeView) View(job model.Job) string {
	if job.Hypothesis == "" && job.Context == "" && job.Intent == "" {
		return v.renderEmpty()
	}

	var sections []string

	// Title
	titleStyle := lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color("#ff9e64")).
		MarginBottom(1)
	sections = append(sections, titleStyle.Render("📊 Research Context"))

	// Hypothesis
	if job.Hypothesis != "" {
		sections = append(sections, v.renderSection("🧪 Hypothesis", job.Hypothesis))
	}

	// Context
	if job.Context != "" {
		sections = append(sections, v.renderSection("📚 Context", job.Context))
	}

	// Intent
	if job.Intent != "" {
		sections = append(sections, v.renderSection("🎯 Intent", job.Intent))
	}

	// Expected Outcome
	if job.ExpectedOutcome != "" {
		sections = append(sections, v.renderSection("📈 Expected Outcome", job.ExpectedOutcome))
	}

	// Actual Outcome (if available)
	if job.ActualOutcome != "" {
		statusIcon := "❓"
		switch job.OutcomeStatus {
		case "validated":
			statusIcon = "✅"
		case "invalidated":
			statusIcon = "❌"
		case "inconclusive":
			statusIcon = "⚖️"
		case "partial":
			statusIcon = "📝"
		}
		sections = append(sections, v.renderSection(statusIcon+" Actual Outcome", job.ActualOutcome))
	}

	// Combine all sections
	content := lipgloss.JoinVertical(lipgloss.Left, sections...)

	// Apply border and padding
	style := lipgloss.NewStyle().
		Border(lipgloss.RoundedBorder()).
		BorderForeground(lipgloss.Color("#7aa2f7")).
		Padding(1, 2).
		Width(v.Width - 4)

	return style.Render(content)
}

func (v *NarrativeView) renderSection(title, content string) string {
	titleStyle := lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color("#7aa2f7"))

	contentStyle := lipgloss.NewStyle().
		Foreground(lipgloss.Color("#d8dee9")).
		MarginLeft(2)

	// Wrap long content
	wrapped := wrapText(content, v.Width-12)

	return lipgloss.JoinVertical(lipgloss.Left,
		titleStyle.Render(title),
		contentStyle.Render(wrapped),
		"",
	)
}

func (v *NarrativeView) renderEmpty() string {
	style := lipgloss.NewStyle().
		Foreground(lipgloss.Color("#88c0d0")).
		Italic(true).
		Padding(2)

	return style.Render("No narrative data available for this job.\n\n" +
		"Use --hypothesis, --context, --intent flags when queuing jobs.")
}

// wrapText wraps text to maxWidth, preserving newlines
func wrapText(text string, maxWidth int) string {
	if maxWidth <= 0 {
		return text
	}

	lines := strings.Split(text, "\n")
	var result []string

	for _, line := range lines {
		if len(line) <= maxWidth {
			result = append(result, line)
			continue
		}

		// Simple word wrap
		words := strings.Fields(line)
		var currentLine string
		for _, word := range words {
			if len(currentLine)+len(word)+1 > maxWidth {
				if currentLine != "" {
					result = append(result, currentLine)
				}
				currentLine = word
			} else {
				if currentLine != "" {
					currentLine += " "
				}
				currentLine += word
			}
		}
		if currentLine != "" {
			result = append(result, currentLine)
		}
	}

	return strings.Join(result, "\n")
}