98 lines
2.2 KiB
Go
98 lines
2.2 KiB
Go
package migrations
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import (
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"context"
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"time"
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"git.handmade.network/hmn/hmn/src/migration/types"
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"git.handmade.network/hmn/hmn/src/oops"
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"github.com/jackc/pgx/v5"
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)
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func init() {
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registerMigration(RemovePostText{})
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}
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type RemovePostText struct{}
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func (m RemovePostText) Version() types.MigrationVersion {
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return types.MigrationVersion(time.Date(2021, 4, 23, 2, 11, 47, 0, time.UTC))
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}
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func (m RemovePostText) Name() string {
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return "RemovePostText"
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}
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func (m RemovePostText) Description() string {
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return "Collapse handmade_posttext and handmade_posttextversion into one table"
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}
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func (m RemovePostText) Up(ctx context.Context, tx pgx.Tx) error {
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_, err := tx.Exec(ctx, `
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CREATE TABLE handmade_postversion (
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id INT PRIMARY KEY,
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post_id INT NOT NULL REFERENCES handmade_post(id) ON DELETE CASCADE,
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text_raw TEXT NOT NULL,
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text_parsed TEXT NOT NULL,
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parser INT NOT NULL,
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edit_ip INET,
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edit_date TIMESTAMP WITH TIME ZONE NOT NULL,
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edit_reason VARCHAR(255) NOT NULL DEFAULT '',
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editor_id INT REFERENCES auth_user(id) ON DELETE SET NULL
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);
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`)
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if err != nil {
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return oops.New(err, "failed to create new postversion table")
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}
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_, err = tx.Exec(ctx, `
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INSERT INTO handmade_postversion
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SELECT
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tver.id,
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tver.post_id,
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t.text,
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t.textparsed,
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t.parser,
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tver.editip,
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COALESCE(tver.editdate, p.postdate),
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COALESCE(tver.editreason, ''),
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tver.editor_id
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FROM
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handmade_posttextversion AS tver
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JOIN handmade_posttext AS t ON tver.text_id = t.id
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JOIN handmade_post AS p ON tver.post_id = p.id
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WHERE
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tver.post_id IS NOT NULL
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`)
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if err != nil {
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return oops.New(err, "failed to create postversions")
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}
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_, err = tx.Exec(ctx, `
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ALTER TABLE handmade_post
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DROP CONSTRAINT handmade_post_current_id_762211b7_fk_handmade_,
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ADD FOREIGN KEY (current_id) REFERENCES handmade_postversion ON DELETE RESTRICT;
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`)
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if err != nil {
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return oops.New(err, "failed to drop old current constraint")
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}
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_, err = tx.Exec(ctx, `
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DROP TABLE handmade_posttextversion;
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DROP TABLE handmade_posttext;
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`)
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if err != nil {
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return oops.New(err, "failed to drop tables")
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}
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return nil
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}
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func (m RemovePostText) Down(ctx context.Context, tx pgx.Tx) error {
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panic("Implement me")
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}
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