package main

import (
	"errors"
	"fmt"
	"log"
	"net/http"

	. "planner/errors"
	"planner/models"
	. "planner/models"

	"github.com/gin-gonic/gin"
	_ "github.com/mattn/go-sqlite3"
)

func main() {
	fmt.Println("Opening database db.sqlite")

	orm := bootstrapDatabase()

	if orm == nil {
		log.Fatal("Failed to init database")
		return
	}

	db, _ := orm.DB()
	defer db.Close()

	r := gin.Default()

	r.GET("/", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"message": "pong",
		})
	})

	r.POST("/login", func(c *gin.Context) {
		var q struct {
			Username string `json:"username" form:"username"`
			Password string `json:"password" form:"password"`
		}
		if c.ShouldBind(&q) == nil {
			if q.Username == "" {
				c.String(http.StatusBadRequest, "Login data is null")
			} else {
				user := User{
					Username: q.Username,
				}
				orm.Take(&user)
				if user.Password == q.Password {
					c.JSON(http.StatusOK, map[string]string{"username": user.Username})
				} else {
					c.Status(http.StatusForbidden)
				}
			}
		} else {
			c.String(http.StatusBadRequest, "Unable to bind data")
		}
	})

	r.GET("/users", func(c *gin.Context) {
		var q struct {
			Name string `form:"name"`
		}
		if c.ShouldBind(&q) == nil {
			user := User{
				Username: q.Name,
			}
			orm.Take(&user)
			fmt.Println(user)
			c.JSON(http.StatusOK, user)
		}
	})

	r.POST("/users", func(c *gin.Context) {
		var u User
		if c.ShouldBind(&u) == nil {
			orm.Create(&u)
			c.Status(http.StatusCreated)
		} else {
			fmt.Print("Could not bind model")
		}
	})

	r.POST("/plans", func(c *gin.Context) {
		username, _, ok := c.Request.BasicAuth()
		if !ok {
			c.Status(http.StatusUnauthorized)
			return
		}
		u := User{
			Username: username,
		}

		if result := orm.Take(&u); result.Error != nil {
			c.String(http.StatusNotFound, "Unable to find user "+username)
			return
		}

		var plan_req struct {
			Name string `json:"name"`
		}
		c.Bind(&plan_req)
		var plan Plan = Plan{
			Name:  plan_req.Name,
			Owner: u.Username,
			Members: []Member{
				{UserID: u.Username},
			},
		}
		result := orm.Create(&plan)

		if result.Error != nil {
			c.JSON(http.StatusInternalServerError, result.Error)
		} else {
			c.JSON(http.StatusOK, plan_req)
		}
	})

	r.GET("/plans", func(c *gin.Context) {
		u := extract_user(orm, c)
		if u == nil {
			return
		}
		plans, err := u.GetPlans(orm)
		if err == nil {
			c.JSON(http.StatusOK, plans)
		} else {
			c.String(http.StatusInternalServerError, err.Error())
		}
	})

	r.GET("/plans/:id", func(c *gin.Context) {
		user := extract_user(orm, c)
		if user == nil {
			return
		}

		var params struct {
			Id uint `uri:"id"`
		}
		bind_result := c.BindUri(&params)
		if bind_result != nil {
			return
		}

		plan, err := GetPlan(orm, *user, params.Id)

		if err == nil {
			c.JSON(http.StatusOK, plan)
		} else if errors.Is(err, ErrNotMember) {
			c.Status(http.StatusForbidden)
		} else if errors.Is(err, ErrNotFound) {
			c.Status(http.StatusNotFound)
		} else {
			c.String(http.StatusInternalServerError, err.Error())
		}
	})

	r.POST("/plans/:id/polls", func(c *gin.Context) {
		user := extract_user(orm, c)
		if user == nil {
			return
		}

		var params struct {
			Id uint `uri:"id"`
		}
		bind_result := c.BindUri(&params)
		if bind_result != nil {
			return
		}

		plan, err := GetPlan(orm, *user, params.Id)

		if errors.Is(err, ErrNotFound) {
			c.Status(http.StatusNotFound)
			return
		} else if errors.Is(err, ErrNotMember) {
			c.Status(http.StatusForbidden)
			return
		} else if err != nil {
			c.String(http.StatusInternalServerError, err.Error())
			return
		}

		var poll_opts struct {
			Options string `json:"options"`
		}
		bind_result = c.Bind(&poll_opts)
		if bind_result != nil {
			fmt.Println(bind_result)
			return
		}

		poll := Poll{
			PlanID:  plan.ID,
			Options: poll_opts.Options,
		}
		orm.Create(&poll)

		c.JSON(http.StatusCreated, poll)
	})

	r.GET("/plans/:id/polls", func(c *gin.Context) {
		user := extract_user(orm, c)
		if user == nil {
			return
		}

		var params struct {
			Id uint `uri:"id"`
		}

		bind_result := c.BindUri(&params)
		if bind_result != nil {
			c.Status(http.StatusBadRequest)
			return
		}

		var polls []Poll
		orm.Where("plan_id = ?", params.Id).Find(&polls)
		c.JSON(http.StatusOK, polls)
	})

	r.GET("/polls/:poll_id", func(c *gin.Context) {
		user := extract_user(orm, c)
		if user == nil {
			return
		}

		var params struct {
			PollId uint `uri:"poll_id"`
		}

		bind_result := c.BindUri(&params)
		if bind_result != nil {
			fmt.Println(bind_result)
			return
		}
		fmt.Println(params)

		poll, _ := models.GetPoll(orm, *user, params.PollId)
		c.JSON(http.StatusOK, poll)
	})

	r.GET("/polls/:poll_id/votes", func(c *gin.Context) {
		user := extract_user(orm, c)
		if user == nil {
			return
		}

		var params struct {
			PollId uint `uri:"poll_id"`
		}

		bind_result := c.BindUri(&params)
		if bind_result != nil {
			fmt.Println(bind_result)
			return
		}

		var votes []Vote
		orm.Where("poll_id = ?", params.PollId).Find(&votes)
		c.JSON(http.StatusOK, &votes)
	})

	r.POST("/polls/:poll_id/votes", func(c *gin.Context) {
		user := extract_user(orm, c)
		if user == nil {
			return
		}

		var path_params struct {
			PollId uint `uri:"poll_id"`
		}

		bind_result := c.BindUri(&path_params)
		if bind_result != nil {
			fmt.Println(bind_result)
			return
		}

		poll, err := models.GetPoll(orm, *user, path_params.PollId)
		if err != nil {
			c.String(http.StatusInternalServerError, err.Error())
			return
		}

		var vote_params struct {
			Vote string `json:"vote"`
		}
		c.Bind(&vote_params)

		if err := poll.SetVote(orm, *user, vote_params.Vote); err != nil {
			c.String(http.StatusBadRequest, err.Error())
		}

		c.Status(http.StatusOK)
	})

	r.Run()
}