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#!/usr/bin/env bash

set -o pipefail

# ============================================================
#                         HASTEBIN
# ============================================================

UPLOAD_URL="https://pste.us/documents"
BASE_URL="https://pste.us"

# ------------------------------------------------------------
# Colors
# ------------------------------------------------------------

BLUE="\033[38;2;137;180;250m"
CYAN="\033[38;2;137;220;235m"
GREEN="\033[38;2;166;227;161m"
MAUVE="\033[38;2;203;166;247m"
RED="\033[38;2;243;139;168m"
YELLOW="\033[38;2;249;226;175m"
TEXT="\033[38;2;205;214;244m"
SUBTEXT="\033[38;2;166;173;200m"
DIM="\033[38;2;108;112;134m"
RESET="\033[0m"

TMP_RESPONSE=""
TMP_PROGRESS=""

# ------------------------------------------------------------
# Cleanup
# ------------------------------------------------------------

cleanup() {
    [[ -n "$TMP_RESPONSE" && -f "$TMP_RESPONSE" ]] && rm -f "$TMP_RESPONSE"
    [[ -n "$TMP_PROGRESS" && -f "$TMP_PROGRESS" ]] && rm -f "$TMP_PROGRESS"
}

trap cleanup EXIT
trap 'exit 130' INT TERM

# ------------------------------------------------------------
# Error
# ------------------------------------------------------------

die() {
    echo
    printf "  ${RED}✗${RESET} ${TEXT}%s${RESET}\n" "$1"
    echo
    exit 1
}

# ------------------------------------------------------------
# Dependencies
# ------------------------------------------------------------

for cmd in curl jq gum fzf; do
    if ! command -v "$cmd" &>/dev/null; then
        die "Missing dependency: $cmd"
    fi
done

# ------------------------------------------------------------
# Arguments
# ------------------------------------------------------------

FILE_PATH="${1:-}"

if [[ "$FILE_PATH" == "-h" || "$FILE_PATH" == "--help" ]]; then
    cat <<'EOF'

Usage:
  hastebin
  hastebin <file>

Upload a file to pste.us and copy the URL.

Examples:
  hastebin
  hastebin script.sh
EOF
    exit 0
fi

# ------------------------------------------------------------
# Select file
# ------------------------------------------------------------

if [[ -z "$FILE_PATH" ]]; then

    FILE_PATH=$(
        find . -maxdepth 1 -type f -printf '%f\n' |
        fzf \
            --prompt="  󰈔  " \
            --border=rounded \
            --border-label=" hastebin " \
            --border-label-pos=2 \
            --reverse \
            --header=" ↑↓ navigate  •  enter select  •  esc cancel " \
            --pointer="▸" \
            --marker="◆" \
            --color="bg+:#313244,bg:#11111b,spinner:#f5c2e7,hl:#f38ba8,fg:#cdd6f4,header:#7f849c,pointer:#a6e3a1,marker:#f5c2e7,fg+:#cdd6f4,prompt:#89b4fa,hl+:#f38a8a,border:#585b70" \
            --preview='bat --style=numbers --color=always --line-range=:80 {}' \
            --preview-window='right:55%:wrap'
    )

    [[ -n "$FILE_PATH" ]] || exit 0
fi

# ------------------------------------------------------------
# Validate file
# ------------------------------------------------------------

[[ -f "$FILE_PATH" ]] || die "File does not exist: $FILE_PATH"
[[ -r "$FILE_PATH" ]] || die "File is not readable: $FILE_PATH"

# ------------------------------------------------------------
# File information
# ------------------------------------------------------------

FILE_NAME="$(basename "$FILE_PATH")"

FILE_BYTES=$(
    stat -c%s "$FILE_PATH" 2>/dev/null ||
    stat -f%z "$FILE_PATH" 2>/dev/null ||
    echo 0
)

if command -v numfmt &>/dev/null; then
    FILE_SIZE=$(numfmt --to=iec --suffix=B "$FILE_BYTES")
else
    FILE_SIZE=$(du -h "$FILE_PATH" | cut -f1)
fi

FILE_TYPE=$(file -b "$FILE_PATH" 2>/dev/null || echo "Unknown")
FILE_TYPE="${FILE_TYPE%%,*}"

# Keep metadata compact
if (( ${#FILE_TYPE} > 38 )); then
    FILE_TYPE="${FILE_TYPE:0:35}..."
fi

# ------------------------------------------------------------
# Temporary files
# ------------------------------------------------------------

TMP_RESPONSE=$(mktemp)
TMP_PROGRESS=$(mktemp)

# ------------------------------------------------------------
# Header
# ------------------------------------------------------------

clear

echo

printf "  ${MAUVE}◆${RESET} ${TEXT}Hastebin${RESET} ${DIM}·${RESET} ${SUBTEXT}quick file sharing${RESET}\n"

echo

printf "  ${DIM}────────────────────────────────────────────────────────${RESET}\n"

printf "  ${BLUE}󰈔${RESET}  ${TEXT}%s${RESET}\n" "$FILE_NAME"

printf "  ${DIM}size${RESET}  ${SUBTEXT}%s${RESET}    " "$FILE_SIZE"
printf "${DIM}type${RESET}  ${SUBTEXT}%s${RESET}\n" "$FILE_TYPE"

printf "  ${DIM}────────────────────────────────────────────────────────${RESET}\n"

echo

# ------------------------------------------------------------
# Upload spinner
# ------------------------------------------------------------

printf "  ${CYAN}󰑓${RESET}  ${TEXT}Uploading${RESET} "

(
    while true; do
        printf "${DIM}·${RESET}"
        sleep 0.20

        printf "\b \b"
        printf "${DIM}•${RESET}"
        sleep 0.20

        printf "\b \b"
        printf "${CYAN}•${RESET}"
        sleep 0.20

        printf "\b \b"
    done
) &

SPINNER_PID=$!

# ------------------------------------------------------------
# Upload
# ------------------------------------------------------------

curl \
    -fS \
    --progress-bar \
    -X POST \
    -H "Content-Type: text/plain" \
    --data-binary @"$FILE_PATH" \
    --data-urlencode "title=$FILE_NAME" \
    "$UPLOAD_URL" \
    >"$TMP_RESPONSE" \
    2>"$TMP_PROGRESS" &

CURL_PID=$!

wait "$CURL_PID"
CURL_STATUS=$?

kill "$SPINNER_PID" 2>/dev/null
wait "$SPINNER_PID" 2>/dev/null

# Clear spinner line
printf "\r\033[2K"

if [[ "$CURL_STATUS" -ne 0 ]]; then
    printf "  ${RED}✗${RESET} ${TEXT}Upload failed.${RESET}\n"
    echo
    exit 1
fi

# ------------------------------------------------------------
# Parse response
# ------------------------------------------------------------

HASTE_KEY=$(jq -r '.key // empty' "$TMP_RESPONSE" 2>/dev/null)
[[ -n "$HASTE_KEY" ]] || die "Invalid response from server."
URL="$BASE_URL/$HASTE_KEY"

# ------------------------------------------------------------
# Clipboard
# ------------------------------------------------------------

COPIED=false

if command -v wl-copy &>/dev/null; then
    printf '%s' "$URL" | wl-copy
    COPIED=true

elif command -v xclip &>/dev/null; then
    printf '%s' "$URL" | xclip -selection clipboard
    COPIED=true

elif command -v xsel &>/dev/null; then
    printf '%s' "$URL" | xsel --clipboard --input
    COPIED=true

elif command -v pbcopy &>/dev/null; then
    printf '%s' "$URL" | pbcopy
    COPIED=true
fi

# ------------------------------------------------------------
# Generate QR
# ------------------------------------------------------------

QR=""

if command -v qrencode &>/dev/null; then
   QR=$(
    qrencode \
        -t ANSIUTF8i \
        -m 1 \
        -l M \
        "$URL"
    )
fi

# ------------------------------------------------------------
# Final output
# ------------------------------------------------------------

printf "  ${GREEN}✓${RESET}  ${TEXT}Upload complete${RESET}\n"

# File information
printf "  ${DIM}FILE${RESET}  ${TEXT}%s${RESET}\n" "$FILE_NAME"
printf "  ${DIM}SIZE${RESET}  ${SUBTEXT}%s${RESET}\n" "$FILE_SIZE"
printf "  ${DIM}TYPE${RESET}  ${SUBTEXT}%s${RESET}\n" "$FILE_TYPE"

echo

# URL
printf "  ${DIM}URL${RESET}\n"
printf "  ${BLUE}%s${RESET}\n" "$URL"

echo

# ------------------------------------------------------------
# QR
# ------------------------------------------------------------

if [[ -n "$QR" ]]; then

    printf "  ${DIM}SCAN TO OPEN${RESET}\n"
    echo

    while IFS= read -r line; do
        printf "    %s\n" "$line"
    done <<< "$QR"

    echo
    echo

else

    printf "  ${YELLOW}⚠${RESET}  ${SUBTEXT}qrencode is not installed${RESET}\n"
    printf "     ${DIM}Install: sudo pacman -S qrencode${RESET}\n"
    echo

fi

# ------------------------------------------------------------
# Clipboard status
# ------------------------------------------------------------

if [[ "$COPIED" == true ]]; then
    printf "  ${GREEN}󰆏${RESET}  ${SUBTEXT}URL copied to clipboard${RESET}\n"
else
    printf "  ${YELLOW}󰆏${RESET}  ${SUBTEXT}Clipboard utility not found${RESET}\n"
fi

echo

printf "  ${DIM}────────────────────────────────────────────────────────${RESET}\n"
printf "  ${GREEN}◆${RESET}  ${SUBTEXT}Ready${RESET}\n"

echo


&title=hastebin