// Code scaffolded by goctl. Safe to edit.
// goctl 1.10.1

package logic

import (
	"context"
	"strings"

	"img_infinite_canvas/internal/config"
	"img_infinite_canvas/internal/svc"
	"img_infinite_canvas/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetAgentStarterConfigLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetAgentStarterConfigLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetAgentStarterConfigLogic {
	return &GetAgentStarterConfigLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetAgentStarterConfigLogic) GetAgentStarterConfig(req *types.GetAgentStarterConfigRequest) (resp *types.AgentStarterConfigResponse, err error) {
	locale := "zh-CN"
	if req != nil && strings.EqualFold(strings.TrimSpace(req.Locale), "en-US") {
		locale = "en-US"
	}
	content := resolveAgentStarterLocale(l.svcCtx.Config.AgentStarter, locale)

	return &types.AgentStarterConfigResponse{
		Title:         content.Title,
		Description:   content.Description,
		PreviewImages: resolveAgentStarterImages(l.svcCtx.Config.AgentStarter.PreviewImages),
		Starters:      toAgentStarterItems(content.Starters),
	}, nil
}

var defaultAgentStarterImages = []string{
	"https://static.codia.ai/public/images/f788bdcc/lg.webp",
	"https://static.codia.ai/public/images/ec25067a/lg.webp",
	"https://static.codia.ai/public/images/d4ccbe39/lg.webp",
}

var defaultAgentStarterPrompts = []config.AgentStarterItemConfig{
	{ID: "ecommerce", Label: "电商商品图", Prompt: "Create a premium ecommerce product image for a portable espresso machine, with realistic lighting, clean composition, benefit callouts, and marketplace-ready visual hierarchy"},
	{ID: "poster", Label: "海报", Prompt: "Design a bold launch poster for a new skincare product line, with strong typography, product focus, campaign headline, date, and a polished premium layout"},
	{ID: "brand-visual", Label: "品牌视觉", Prompt: "Create a brand identity direction for a modern wellness drink brand, including color palette, typography mood, logo usage, packaging accents, and social-ready visual elements"},
	{ID: "social-media", Label: "社交媒体", Prompt: "Create a square Instagram promotion for a weekend fashion sale, with product cutouts, discount headline, brand colors, and a layout that works as a paid social ad"},
	{ID: "logo", Label: "Logo 设计", Prompt: "Design a clean vector logo for a direct-to-consumer home goods brand named Loom & Line, with a simple mark, balanced wordmark, and clear black-and-white usage"},
}

func resolveAgentStarterLocale(options config.AgentStarterConfig, locale string) config.AgentStarterLocaleConfig {
	fallback := config.AgentStarterLocaleConfig{
		Title:       "今天想创作什么？",
		Description: "输入提示词开始——或使用下方的起点",
		Starters:    defaultAgentStarterPrompts,
	}
	configured := options.ZhCN
	if locale == "en-US" {
		fallback.Title = "What would you like to create today?"
		fallback.Description = "Enter a prompt to begin, or use one of the starting points below."
		fallback.Starters = englishAgentStarterPrompts(defaultAgentStarterPrompts)
		configured = options.EnUS
	}

	if title := strings.TrimSpace(configured.Title); title != "" {
		fallback.Title = title
	}
	if description := strings.TrimSpace(configured.Description); description != "" {
		fallback.Description = description
	}
	if starters := validAgentStarterConfigs(configured.Starters); len(starters) > 0 {
		fallback.Starters = starters
	}
	return fallback
}

func englishAgentStarterPrompts(items []config.AgentStarterItemConfig) []config.AgentStarterItemConfig {
	labels := map[string]string{
		"ecommerce":    "E-commerce product",
		"poster":       "Poster",
		"brand-visual": "Brand visual",
		"social-media": "Social media",
		"logo":         "Logo design",
	}
	result := make([]config.AgentStarterItemConfig, 0, len(items))
	for _, item := range items {
		item.Label = labels[item.ID]
		result = append(result, item)
	}
	return result
}

func resolveAgentStarterImages(configured []string) []string {
	images := make([]string, 0, len(configured))
	for _, image := range configured {
		if image = strings.TrimSpace(image); image != "" {
			images = append(images, image)
		}
		if len(images) == 3 {
			break
		}
	}
	if len(images) == 0 {
		return append([]string(nil), defaultAgentStarterImages...)
	}
	return images
}

func validAgentStarterConfigs(configured []config.AgentStarterItemConfig) []config.AgentStarterItemConfig {
	starters := make([]config.AgentStarterItemConfig, 0, len(configured))
	seen := make(map[string]struct{}, len(configured))
	for _, item := range configured {
		item.ID = strings.TrimSpace(item.ID)
		item.Label = strings.TrimSpace(item.Label)
		item.Prompt = strings.TrimSpace(item.Prompt)
		if item.ID == "" || item.Label == "" || item.Prompt == "" {
			continue
		}
		if _, exists := seen[item.ID]; exists {
			continue
		}
		seen[item.ID] = struct{}{}
		starters = append(starters, item)
	}
	return starters
}

func toAgentStarterItems(configured []config.AgentStarterItemConfig) []types.AgentStarterItem {
	items := make([]types.AgentStarterItem, 0, len(configured))
	for _, item := range configured {
		items = append(items, types.AgentStarterItem{Id: item.ID, Label: item.Label, Prompt: item.Prompt})
	}
	return items
}