package detailsview

import "github.com/tigorlazuardi/redmage/views"
import "github.com/tigorlazuardi/redmage/models"
import "github.com/tigorlazuardi/redmage/views/components"
import "strconv"
import "github.com/tigorlazuardi/redmage/api"
import "fmt"

type Data struct {
	Subreddit   *models.Subreddit
	Images      models.ImageSlice
	TotalImages int64
	Error       string
	Params      api.SubredditGetByNameImageParams
}

templ Detailsview(c *views.Context, data Data) {
	@components.Doctype() {
		@components.Head(c, components.HeadTitle(fmt.Sprintf("Subreddit - %s", data.Subreddit.Name)))
		@components.Body(c) {
			@DetailsContent(c, data)
			@components.NotificationContainer()
		}
	}
}

templ DetailsContent(c *views.Context, data Data) {
	<main class="prose min-w-full">
		@components.Container() {
			if data.Error != "" {
				<h1>Error: { data.Error }</h1>
			} else {
				<h1>Subreddit { data.Subreddit.Name }</h1>
				<div class="flex flex-wrap justify-between content-center">
					<h2 class="my-auto">
						Total Images: 
						{ strconv.FormatInt(data.TotalImages, 10) }
					</h2>
					<button
						hx-post="/htmx/subreddits/start"
						hx-include="this"
						class="btn btn-primary text-base-100"
						hx-target={ components.NotificationContainerID }
						hx-target-error={ components.NotificationContainerID }
						hx-swap="afterbegin"
					>
						Start Download
						<input type="hidden" name="subreddit" value={ data.Subreddit.Name }/>
					</button>
				</div>
				<div class="divider"></div>
				<div class="flex gap-4 flex-wrap justify-between content-center">
					@FilterBar(c, data)
					@showingImageFromTo(data)
					@paginationButtons(c, data)
				</div>
				<div class="flex flex-wrap gap-4 my-8 justify-around">
					for _, image := range data.Images {
						@components.ImageCard(image, 0)
					}
				</div>
				<div class="flex w-full justify-center">
					@paginationButtons(c, data)
				</div>
			}
		}
	</main>
}

templ FilterBar(c *views.Context, data Data) {
	<div
		id="filter-bar"
		hx-get={ fmt.Sprintf("/subreddits/details/%s", data.Subreddit.Name) }
		hx-include="this"
		hx-trigger="change, on-rapid delay:500ms, on-demand"
		hx-target="main"
		hx-select="main"
		hx-push-url="true"
		class="flex flex-wrap gap-4"
	>
		<label class="input input-bordered flex items-center gap-2">
			<input
				id="search"
				type="text"
				class="grow"
				placeholder="Search"
				name="q"
				value={ data.Params.Q }
				oninput="htmx.trigger('#filter-bar', 'on-rapid')"
			/>
			<svg
				onclick="htmx.trigger('#filter-bar', 'on-demand')"
				xmlns="http://www.w3.org/2000/svg"
				viewBox="0 0 16 16"
				fill="currentColor"
				class="w-4 h-4 opacity-70"
			><path fill-rule="evenodd" d="M9.965 11.026a5 5 0 1 1 1.06-1.06l2.755 2.754a.75.75 0 1 1-1.06 1.06l-2.755-2.754ZM10.5 7a3.5 3.5 0 1 1-7 0 3.5 3.5 0 0 1 7 0Z" clip-rule="evenodd"></path></svg>
		</label>
		<label class="input flex items-center gap-2">
			Limit
			<select name="limit" class="select select-bordered w-full">
				@limitOption(data.Params, 25)
				@limitOption(data.Params, 50)
				@limitOption(data.Params, 75)
				@limitOption(data.Params, 100)
			</select>
		</label>
	</div>
}

templ paginationButtons(_ *views.Context, data Data) {
	if data.TotalImages > data.Params.Limit {
		<div class="join">
			for i, count := 1, int64(0); count < data.TotalImages; i, count = i+1, count+data.Params.Limit {
				if data.Params.Offset <= count && data.Params.Offset > count-data.Params.Limit {
					<a href={ buildURL(data.Subreddit.Name, data.Params, "offset", strconv.FormatInt(count, 10)) } class="join-item btn btn-active no-underline">{ strconv.Itoa(i) }</a>
				} else {
					<a href={ buildURL(data.Subreddit.Name, data.Params, "offset", strconv.FormatInt(count, 10)) } class="join-item btn no-underline">{ strconv.Itoa(i) }</a>
				}
			}
		</div>
	}
}

func buildURL(subreddit string, params api.SubredditGetByNameImageParams, extraQueries ...string) templ.SafeURL {
	queries := params.IntoQueryWith(extraQueries...)

	return templ.SafeURL(fmt.Sprintf("/subreddits/details/%s?%s", subreddit, queries.Encode()))
}

templ limitOption(params api.SubredditGetByNameImageParams, value int) {
	if int(params.Limit) == value {
		<option selected>{ strconv.Itoa(value) }</option>
	} else {
		<option>{ strconv.Itoa(value) }</option>
	}
}

templ showingImageFromTo(data Data) {
	if data.TotalImages > 1 {
		<span class="my-auto">{ showingFromToImages(data) }</span>
	}
}

func showingFromToImages(data Data) string {
	params := data.Params
	start := params.Offset + 1
	end := params.Limit + params.Offset
	if end > data.TotalImages {
		end = data.TotalImages
	}
	return fmt.Sprintf("Showing from %d to %d", start, end)
}