Added fetch script for UK Gov FindATender service which is based on OCDS (with issues...)

internal/findATender/findATender.go

@@ -0,0 +1,91 @@
+/*
+Copyright © 2026 Craig Williams <craig@avsdev.uk>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package findATender
+
+import (
+	"context"
+	"time"
+
+	"git.avsdev.uk/Go/job-search/internal/config"
+	"git.avsdev.uk/Go/job-search/internal/findATender/ocds"
+	resty "resty.dev/v3"
+)
+
+type FindATender struct {
+	httpClient *resty.Client
+	config     *config.JobSearchConfig
+	apiRoot    string
+	ctx        context.Context
+}
+
+func New(conf *config.JobSearchConfig, apiRoot string) FindATender {
+	ft := FindATender{
+		config:  conf,
+		apiRoot: apiRoot,
+	}
+	ft.httpClient = resty.New().
+		SetTimeout(60 * time.Duration(time.Second)).
+		SetRetryCount(1)
+	return ft
+}
+
+func (ft *FindATender) ReloadConfig(conf *config.JobSearchConfig) {
+	ft.config = conf
+	// TODO: any reloading required for configuration change handling
+}
+
+func (ft *FindATender) With(ctx context.Context) *FindATender {
+	if ctx == nil {
+		return ft
+	}
+
+	copied := *ft
+	copied.ctx = ctx
+	return &copied
+}
+
+func (ft *FindATender) Shutdown() {
+	ft.httpClient.Close()
+}
+
+func (ft *FindATender) FetchOnce(
+	since time.Time,
+	allowRateLimit bool,
+) ([]ocds.Release, error) {
+	reqs, err := ft.fetchOnce(RequestOptions{
+		Since:          since,
+		AllowRateLimit: allowRateLimit,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return reqs, nil
+}
+
+func (ft *FindATender) FetchAll(
+	since time.Time,
+	allowRateLimit bool,
+) ([]ocds.Release, error) {
+	reqs, err := ft.fetchAll(RequestOptions{
+		Since:          since,
+		AllowRateLimit: allowRateLimit,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return reqs, nil
+}