#!/usr/bin/env bash

set -euo pipefail

PADDLE_API_URL="https://api.paddle.com"

: "${PADDLE_API_KEY:?PADDLE_API_KEY is not set}"
: "${PADDLE_PRODUCT_ID:?PADDLE_PRODUCT_ID is not set}"

command -v curl >/dev/null || {
    echo "ERROR: curl is required."
    exit 1
}

command -v jq >/dev/null || {
    echo "ERROR: jq is required."
    exit 1
}

if [[ "$PADDLE_API_KEY" != pdl_live_apikey_* ]]; then
    echo "ERROR: This script requires a Paddle LIVE API key."
    exit 1
fi

if [[ "$PADDLE_PRODUCT_ID" != pro_* ]]; then
    echo "ERROR: Invalid Paddle product ID."
    exit 1
fi

echo "============================================"
echo " SonarDesk Paddle Production Price Setup"
echo "============================================"
echo
echo "Product: $PADDLE_PRODUCT_ID"
echo

# ------------------------------------------------------------
# Verify product
# ------------------------------------------------------------

PRODUCT_RESPONSE="$(
    curl -fsS \
        -H "Authorization: Bearer $PADDLE_API_KEY" \
        -H "Accept: application/json" \
        "$PADDLE_API_URL/products/$PADDLE_PRODUCT_ID"
)"

PRODUCT_NAME="$(echo "$PRODUCT_RESPONSE" | jq -r '.data.name // empty')"

if [[ -z "$PRODUCT_NAME" ]]; then
    echo "ERROR: Could not retrieve Paddle product."
    exit 1
fi

echo "Found product: $PRODUCT_NAME"
echo

# ------------------------------------------------------------
# Existing prices
# ------------------------------------------------------------

get_prices() {
    curl -fsS \
        -H "Authorization: Bearer $PADDLE_API_KEY" \
        -H "Accept: application/json" \
        "$PADDLE_API_URL/prices?product_id=$PADDLE_PRODUCT_ID&status=active&per_page=100"
}

find_price_by_description() {
    local description="$1"

    get_prices |
        jq -r \
            --arg description "$description" \
            '.data[]
             | select(.description == $description)
             | .id' |
        head -n 1
}

create_price() {
    local description="$1"
    local amount="$2"
    local interval="$3"

    echo "Creating: $description"

    curl -fsS \
        -X POST \
        "$PADDLE_API_URL/prices" \
        -H "Authorization: Bearer $PADDLE_API_KEY" \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        --data "$(
            jq -n \
                --arg product "$PADDLE_PRODUCT_ID" \
                --arg description "$description" \
                --arg amount "$amount" \
                --arg interval "$interval" \
                '{
                    product_id: $product,
                    description: $description,
                    unit_price: {
                        amount: $amount,
                        currency_code: "GBP"
                    },
                    billing_cycle: {
                        interval: $interval,
                        frequency: 1
                    },
                    quantity: {
                        minimum: 1,
                        maximum: 1
                    },
                    tax_mode: "account_setting"
                }'
        )" |
        jq -r '.data.id'
}

update_price_amount() {
    local price_id="$1"
    local description="$2"
    local amount="$3"

    echo "Updating: $description ($price_id)"

    curl -fsS \
        -X PATCH \
        "$PADDLE_API_URL/prices/$price_id" \
        -H "Authorization: Bearer $PADDLE_API_KEY" \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        --data "$(
            jq -n \
                --arg description "$description" \
                --arg amount "$amount" \
                '{
                    description: $description,
                    unit_price: {
                        amount: $amount,
                        currency_code: "GBP"
                    }
                }'
        )" >/dev/null
}

ensure_price() {
    local description="$1"
    local amount="$2"
    local interval="$3"

    local existing
    existing="$(find_price_by_description "$description")"

    if [[ -n "$existing" ]]; then
        local current_amount
        current_amount="$(
            get_prices |
                jq -r \
                    --arg id "$existing" \
                    '.data[]
                     | select(.id == $id)
                     | .unit_price.amount'
        )"

        if [[ "$current_amount" != "$amount" ]]; then
            echo "Existing price $existing has amount $current_amount."
            echo "Required amount is $amount."
            update_price_amount \
                "$existing" \
                "$description" \
                "$amount"
        else
            echo "Exists: $description ($existing)"
        fi

        echo "$existing"
        return
    fi

    create_price \
        "$description" \
        "$amount" \
        "$interval"
}

# ------------------------------------------------------------
# SonarDesk production prices
#
# Paddle amounts are in pennies:
#
# £2.99  = 299
# £24.99 = 2499
# £4.99  = 499
# £44.99 = 4499
# ------------------------------------------------------------

echo "Configuring prices..."
echo

PERSONAL_MONTHLY="$(
    ensure_price \
        "SonarDesk Personal Monthly" \
        "299" \
        "month" |
    tail -n 1
)"

PERSONAL_ANNUAL="$(
    ensure_price \
        "SonarDesk Personal Annual" \
        "2499" \
        "year" |
    tail -n 1
)"

PROFESSIONAL_MONTHLY="$(
    ensure_price \
        "SonarDesk Professional Monthly" \
        "499" \
        "month" |
    tail -n 1
)"

PROFESSIONAL_ANNUAL="$(
    ensure_price \
        "SonarDesk Professional Annual" \
        "4499" \
        "year" |
    tail -n 1
)"

echo
echo "============================================"
echo " Paddle Production Prices"
echo "============================================"
echo
echo "Personal Monthly:      $PERSONAL_MONTHLY"
echo "Personal Annual:       $PERSONAL_ANNUAL"
echo "Professional Monthly:  $PROFESSIONAL_MONTHLY"
echo "Professional Annual:   $PROFESSIONAL_ANNUAL"
echo
echo "Add these to the production .env:"
echo
echo "PADDLE_ENVIRONMENT=production"
echo "PADDLE_API_URL=https://api.paddle.com"
echo "PADDLE_PRODUCT_ID=$PADDLE_PRODUCT_ID"
echo "PADDLE_PERSONAL_MONTHLY_PRICE_ID=$PERSONAL_MONTHLY"
echo "PADDLE_PERSONAL_ANNUAL_PRICE_ID=$PERSONAL_ANNUAL"
echo "PADDLE_PROFESSIONAL_MONTHLY_PRICE_ID=$PROFESSIONAL_MONTHLY"
echo "PADDLE_PROFESSIONAL_ANNUAL_PRICE_ID=$PROFESSIONAL_ANNUAL"
echo
echo "IMPORTANT:"
echo "PADDLE_API_KEY and PADDLE_CLIENT_SIDE_TOKEN must also be LIVE values."
echo "PADDLE_WEBHOOK_SECRET must come from the LIVE webhook destination."
echo