#!/bin/bash
# Shared by post.sh and terms.sh: layered config loading and base URL
# construction. The caller sets SITE (possibly empty) and CONFIG_DIR before
# calling wp_load_config, and USER/PASSWORD/SERVER/... end up in scope.

CONFIG_DIR="${WORDPRESS_REST_CURL_CONFIG_DIR:-$HOME/.config/wordpress-rest-curl}"

wp_load_config() {
    local default_config_file="$CONFIG_DIR/config.sh"
    [[ -e "$default_config_file" ]] && source "$default_config_file"

    if [[ -n "$SITE" ]]; then
        local site_config_file="$CONFIG_DIR/$SITE.sh"
        [[ -e "$site_config_file" ]] || { echo "Config file not found: $site_config_file" >&2; exit 1; }
        source "$site_config_file"
    elif [[ ! -e "$default_config_file" ]]; then
        echo "No site specified and no default config found. Pass --site NAME or create $default_config_file" >&2
        exit 1
    fi
}

# Prints $SERVER normalized into a scheme-qualified, slash-trimmed base URL.
wp_base_url() {
    local base_url="$SERVER"
    [[ "$base_url" != http://* && "$base_url" != https://* ]] && base_url="https://$base_url"
    echo "${base_url%/}"
}

# Runs curl against the WP REST API with shared auth/UA/error-handling.
# Usage: wp_api_call METHOD PATH [curl-args...]
# Prints the response body on success; on a non-2xx status prints the error
# to stderr and returns 1 (does not exit, so callers can decide what to do).
wp_api_call() {
    local method="$1" path="$2"
    shift 2
    local response http_code body
    response=$(curl --silent --show-error --user "$USER:$PASSWORD" -X "$method" \
        -A "$USER_AGENT" \
        -w '\n%{http_code}' \
        "$@" \
        "$(wp_base_url)$path")
    http_code=$(echo "$response" | tail -n1)
    body=$(echo "$response" | sed '$d')
    if [[ "$http_code" -lt 200 || "$http_code" -ge 300 ]]; then
        echo "Error: WordPress API returned HTTP $http_code" >&2
        echo "$body" >&2
        return 1
    fi
    echo "$body"
}

# Prints every item across all pages of a paginated WP list endpoint at
# PATH, one JSON object per line.
wp_api_list_all() {
    local path="$1" page=1 count body
    while :; do
        body=$(wp_api_call GET "$path?per_page=100&page=$page") || exit 1
        count=$(echo "$body" | jq 'length')
        [[ "$count" -eq 0 ]] && break
        echo "$body" | jq -c '.[]'
        [[ "$count" -lt 100 ]] && break
        page=$((page + 1))
    done
}

# Resolves NAME to a numeric term ID under taxonomy endpoint PATH (e.g.
# /wp-json/wp/v2/categories), creating the term first if it doesn't exist.
wp_resolve_term() {
    local path="$1" name="$2" found_id payload body
    found_id=$(wp_api_list_all "$path" | jq -r --arg name "$name" 'select(.name == $name) | .id' | head -n1)
    if [[ -n "$found_id" ]]; then
        echo "$found_id"
        return
    fi
    payload=$(jq -n --arg name "$name" '{name: $name}')
    body=$(wp_api_call POST "$path" -H "Content-Type: application/json" --data "$payload") || exit 1
    echo "$body" | jq -r '.id'
}