package handler

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"github.com/sundynix/sundynix-shared/prompts"
)

// PromptList: GET /api/v1/prompts —— 列出受管 prompt 的全部版本 + 可配键（管理端浏览/对比/回滚）。
func (h *Handler) PromptList(c *gin.Context) {
	rows, err := h.db.ListPrompts(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	out := make([]gin.H, 0, len(rows))
	for _, r := range rows {
		out = append(out, gin.H{"key": r.Key, "version": r.Version, "active": r.Active, "note": r.Note, "content": r.Content})
	}
	c.JSON(http.StatusOK, gin.H{"keys": prompts.Known, "versions": out})
}

// PromptCreateVersion: POST /api/v1/prompts/version {key, content, note} —— 为某 key 建新版本（不自动激活）。
func (h *Handler) PromptCreateVersion(c *gin.Context) {
	var body struct {
		Key     string `json:"key"`
		Content string `json:"content"`
		Note    string `json:"note"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.Key == "" || body.Content == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "key/content required"})
		return
	}
	v, err := h.db.CreatePromptVersion(c.Request.Context(), body.Key, body.Content, body.Note)
	if err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"key": body.Key, "version": v})
}

// PromptActivate: POST /api/v1/prompts/activate {key, version} —— 激活某版本 → 经控制面热下发各服务（不重启即生效）。
func (h *Handler) PromptActivate(c *gin.Context) {
	var body struct {
		Key     string `json:"key"`
		Version int    `json:"version"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.Key == "" || body.Version <= 0 {
		c.JSON(http.StatusBadRequest, gin.H{"error": "key/version required"})
		return
	}
	if err := h.db.ActivatePrompt(c.Request.Context(), body.Key, body.Version); err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	// 广播最新激活集 → dispatcher/mcp-go 热更新覆盖。
	if err := h.bus.PublishPromptsUpdated(h.db.ActivePrompts(c.Request.Context())); err != nil {
		c.JSON(http.StatusOK, gin.H{"key": body.Key, "version": body.Version, "warn": "已激活但广播失败: " + err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"key": body.Key, "version": body.Version, "activated": true})
}

// PromptDeactivate: POST /api/v1/prompts/deactivate {key} —— 撤销某 key 激活，回退代码内置默认（热下发）。
func (h *Handler) PromptDeactivate(c *gin.Context) {
	var body struct {
		Key string `json:"key"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.Key == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "key required"})
		return
	}
	if err := h.db.DeactivatePrompt(c.Request.Context(), body.Key); err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	_ = h.bus.PublishPromptsUpdated(h.db.ActivePrompts(c.Request.Context()))
	c.JSON(http.StatusOK, gin.H{"key": body.Key, "deactivated": true})
}